CVE-2021-3542

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

These are all security issues fixed in the kernel-devel-5.14.14-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the kernel-devel-longterm-6.6.17-1.1 package on the GA media of openSUSE Tumbleweed.

The SUSE Linux Enterprise 11 SP4 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563 bnc#1192267).
• CVE-2014-7841: The sctp_process_param function in net/sctp/sm_make_chunk.c in the SCTP implementation, when ASCONF is used, allowed remote attackers to cause a denial of service (NULL pointer dereference and system crash) via a malformed INIT chunk (bnc#904899 bnc#905100).
• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673 bnc#1192036).
• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1188876).
• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2021-42008: The decode_data function in drivers/net/hamradio/6pack.c had a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access (bnc#1191315).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computed the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-3653: A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the 'int_ctl' field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. (bnc#1189399).
• CVE-2021-3679: A lack of CPU resource in the Linux kernel tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3609: A potential local privilege escalation in the CAN BCM networking protocol was fixed (bsc#1187215).
• CVE-2020-36385: drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c (bnc#1187050).

The following non-security bugs were fixed:

• sctp: check asoc peer.asconf_capable before processing asconf (bsc#1190351).
• sctp: fully initialize v4 addr in some functions (bsc#1188563).
• sctp: simplify addr copy (bsc#1188563).

The SUSE Linux Enterprise 15 SP2 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).

The following non-security bugs were fixed:

• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
• HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
• HID: u2fzero: ignore incomplete packets without data (git-fixes).
• HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
• HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (git-fixes).
• ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition (bsc#1191241).
• IPv6: reply ICMP error if the first fragment do not include all headers (bsc#1191241).
• Input: snvs_pwrkey - add clk handling (git-fixes).
• Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
• KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
• KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
• KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
• KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
• KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1133021).
• KVM: s390: VSIE: correctly handle MVPG when in VSIE (bsc#1133021).
• KVM: s390: extend kvm_s390_shadow_fault…

The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).

The following non-security bugs were fixed:

• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Add quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell Precision 5560 laptop (git-fixes).
• ALSA: hda/realtek: Fix for quirk to enable speaker output on the Lenovo 13s Gen2 (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• ALSA: pcm: Workaround for a wrong offset in SYNC_PTR compat ioctl (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: Intel: Skylake: Fix module configuration for KPB and MIXER (git-fixes).
• ASoC: Intel: Skylake: Fix passing loadable flag for module (git-fixes).
• ASoC: Intel: bytcr_rt5640: Move 'Platform Clock' routes to the maps for the matching in-/output (git-fixes).
• ASoC: Intel: sof_sdw: tag SoundWire BEs as non-atomic (git-fixes).
• ASoC: SOF: imx: imx8: Bar index is only valid for…

The SUSE Linux Enterprise 15 SP3 Real Time kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).

The following non-security bugs were fixed:

• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Add quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell Precision 5560 laptop (git-fixes).
• ALSA: hda/realtek: Fix for quirk to enable speaker output on the Lenovo 13s Gen2 (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• ALSA: pcm: Workaround for a wrong offset in SYNC_PTR compat ioctl (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: Intel: Skylake: Fix module configuration for KPB and MIXER (git-fixes).
• ASoC: Intel: Skylake: Fix passing loadable flag for module (git-fixes).
• ASoC: Intel: bytcr_rt5640: Move 'Platform Clock' routes to the maps for the matching in-/output (git-fixes).
• ASoC: Intel: sof_sdw: tag SoundWire BEs as non-atomic (git-fixes).
• ASoC: SOF: imx: imx8: Bar index is only valid for…

The SUSE Linux Enterprise 15 SP2 Real Time kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).

The following non-security bugs were fixed:

• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
• HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
• HID: u2fzero: ignore incomplete packets without data (git-fixes).
• HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
• HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (git-fixes).
• ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition (bsc#1191241).
• IPv6: reply ICMP error if the first fragment do not include all headers (bsc#1191241).
• Input: snvs_pwrkey - add clk handling (git-fixes).
• Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
• KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
• KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
• KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
• KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
• NFC: digital: fix possible memory leak in digital_in_send_sdd_req() (git-fixes).
• NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() (git-fixes).
• NFS:…

The following security bugs were fixed:

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

The following non-security bugs were fixed:

• acpi/arm64: fix next_platform_timer() section mismatch error (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Add quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell Precision 5560 laptop (git-fixes).
• ALSA: hda/realtek: Fix for quirk to enable speaker output on the Lenovo 13s Gen2 (git-fixes).
• ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14 (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: hda: Use position buffer for SKL+ again (git-fixes).
• ALSA: pcm: Workaround for a wrong offset in SYNC_PTR compat ioctl (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA:…

The SUSE Linux Enterprise 12 SP5 Real Time kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free in hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

The following non-security bugs were fixed:

• IB/hfi1: Fix abba locking issue with sc_disable() (git-fixes)
• ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition (bsc#1191241).
• IPv6: reply ICMP error if the first fragment do not include all headers (bsc#1191241).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• NFS: Do uncached readdir when we're seeking a cookie in an empty page cache (bsc#1191628).
• PM: base: power: do not try to use non-existing RTC for storing data (git-fixes).
• SMB3.1.1: Fix ids returned in POSIX query dir (bsc#1190317).
• SMB3.1.1: do not log warning message if server does not populate salt (bsc#1190317).
• SMB3.1.1: fix mount failure to some servers when compression enabled (bsc#1190317).
• SMB3.1.1: remove confusing mount warning when no SPNEGO info on negprot rsp (bsc#1190317).
• SMB3.1.1: update comments clarifying SPNEGO info in negprot response (bsc#1190317).
• SMB3: Add new info level for query directory (bsc#1190317).
• SMB3: Add support for getting and setting SACLs (bsc#1190317).
• SMB3: Fix mkdir when idsfromsid configured on mount (bsc#1190317).
• SMB3: Resolve data corruption of TCP server info fields (bsc#1190317).
• SMB3: add support for recognizing WSL reparse tags (bsc#1190317).
• SMB3: avoid confusing warning message on mount to Azure (bsc#1190317).
• SMB3: fix readpage for large swap cache (bsc#1190317).
• SMB3: incorrect file id in requests compounded with open (bsc#1190317).
• SMB3: update structures for new compression protocol definitions (bsc#1190317).
• USB: cdc-acm: fix break reporting (git-fixes).
• USB: cdc-acm: fix racy tty buffer accesses (git-fixes).
• USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter (git-fixes).
• USB: serial: option: add Telit LN920 compositions…

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free inside hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).

The following non-security bugs were fixed:

• IB/hfi1: Fix abba locking issue with sc_disable() (git-fixes)
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• NFS: Do uncached readdir when we're seeking a cookie in an empty page cache (bsc#1191628).
• NFS: Fix backport error - dir_cookie is a pointer to a u64, not a u64.
• PM: base: power: do not try to use non-existing RTC for storing data (git-fixes).
• SMB3.1.1: Fix ids returned in POSIX query dir (bsc#1190317).
• SMB3.1.1: do not log warning message if server does not populate salt (bsc#1190317).
• SMB3.1.1: fix mount failure to some servers when compression enabled (bsc#1190317).
• SMB3.1.1: remove confusing mount warning when no SPNEGO info on negprot rsp (bsc#1190317).
• SMB3.1.1: update comments clarifying SPNEGO info in negprot response (bsc#1190317).
• SMB3: Add new info level for query directory (bsc#1190317).
• SMB3: Add support for getting and setting SACLs (bsc#1190317).
• SMB3: Fix mkdir when idsfromsid configured on mount (bsc#1190317).
• SMB3: Resolve data corruption of TCP server info fields (bsc#1190317).
• SMB3: add support for recognizing WSL reparse tags (bsc#1190317).
• SMB3: avoid confusing warning message on mount to Azure (bsc#1190317).
• SMB3: fix readpage for large swap cache (bsc#1190317).
• SMB3: incorrect file id in requests compounded with open (bsc#1190317).
• SMB3: update structures for new compression protocol definitions (bsc#1190317).
• USB: cdc-acm: fix break reporting (git-fixes).
• USB: cdc-acm: fix racy tty buffer accesses (git-fixes).
• USB: iowarrior: fix control-message timeouts (git-fixes).
• USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter (git-fixes).
• USB: serial: keyspan: fix memleak on probe errors (git-fixes).
• USB: serial: option: add Telit LN920 compositions (git-fixes).
• USB: serial: option:…

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).

The following non-security bugs were fixed:

• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
• HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
• HID: u2fzero: ignore incomplete packets without data (git-fixes).
• HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
• HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (git-fixes).
• ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition (bsc#1191241).
• IPv6: reply ICMP error if the first fragment do not include all headers (bsc#1191241).
• Input: snvs_pwrkey - add clk handling (git-fixes).
• Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
• KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
• KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
• KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
• KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
• NFC: digital: fix possible memory leak in digital_in_send_sdd_req() (git-fixes).
• NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() (git-fixes).
• NFS: dir_cookie…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may have allowed unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1068032). Additional spectrev1 fixes were added to the eBPF code.

• CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1087082 bnc#1100416 bnc#1129735).

• CVE-2018-16882: A use-after-free issue was found in the way the KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions and are vulnerable (bnc#1119934).

• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1176724).

• CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2020-14305: An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allowed an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability (bnc#1173346).

• CVE-2020-3702: Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic (bnc#1191193).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO…

The SUSE Linux Enterprise 12 SP3 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2017-17862: kernel/bpf/verifier.c in the Linux kernel ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service (bnc#1073928).

• CVE-2017-17864: kernel/bpf/verifier.c in the Linux kernel mishandled states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allowed local users to obtain potentially sensitive address information, aka a 'pointer leak (bnc#1073928).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3760: Fixed a use-after-free…

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

The following security bugs were fixed:

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).
• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).
• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails. (bsc#1191961)
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free inside hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3772: Fixed a remote denial of service in the SCTP stack, if the attacker can spoof IP addresses and knows the IP-addresses and port numbers being used (bnc#1190351).
• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications…

Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-42739. Reason: This candidate is a reservation duplicate of CVE-2021-42739. Notes: All CVE users should reference CVE-2021-42739 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage