CVE-2020-8428

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.

Andrew Honig reported a flaw in the way KVM (Kernel-based Virtual Machine) emulated the IOAPIC. A privileged guest user could exploit this flaw to read host memory or cause a denial of service (crash the host). (CVE-2013-1798)

It was discovered that the KVM implementation in the Linux kernel, when paravirtual TLB flushes are enabled in guests, the hypervisor in some situations could miss deferred TLB flushes or otherwise mishandle them. An attacker in a guest VM could use this to expose sensitive information (read memory from another guest VM). (CVE-2019-3016)

Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)

This update is based on upstream 5.4.17 and fixes at least the following security vulnerabilities:

In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out (CVE-2019-3016).

A heap-based buffer overflow vulnerability was found in the Linux kernel, in Marvell WiFi chip driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP (CVE-2019-14896).

A stack-based buffer overflow was found in the Linux kernel, in Marvell WiFi chip driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and connects to another STA (CVE-2019-14897).

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed (CVE-2020-8428).

arm64/KVM debug registers vulnerability affecting systems with an ARMv8.1 or later CPU (with the Virtualisation Host Extensions). The implications are that a guest, for a brief period, may be able to read event counters belonging to the host or potentially trigger perf-related IRQs in the host (no CVE assigned yet).

There is also various fixes for crashing or hanging the kernel by malicious users or devices.

Other additional fixes and features in this update:

• WireGuard kernel module has been updated to 0.0.20200128 and the tools has been updated to 1.0.20200121.

• platform/x86: asus_wmi: Support throttle thermal policy, and set to default to avoid overheating and throttling

• hwmon/k10temp: Support for additional temperature sensors as well as voltage and current telemetry for Zen CPUs

• hid: add Amd Sensor Fusion Hub Driver

• e1000e: Revert "e1000e: Make watchdog use delayed work" as it causes issues on some systems

• e1000e: Add support for Comet Lake and Tiger Lake

• x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode (fixing PIT not being setup on some systems)

• cifs: fix soft mounts hanging in the reconnect code

• move kernel preun bits to postun to fix grub2 menu cleanup on kernel uninstall (mga#16268)

For other upstream fixes in this update, see the referenced changelogs.

This update provides upstream 5.4.20, adding support for new hardware and features, and resolves at least the following security issues:

In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out (CVE-2019-3016).

Intel GPU Hardware prior to Gen11 does not clear EU state during a context switch. This can result in information leakage between contexts (CVE-2019-14615).

A heap-based buffer overflow was discovered in the Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could allow the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (CVE-2019-14895).

A heap-based buffer overflow vulnerability was found in the Linux kernel, in Marvell WiFi chip driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP (CVE-2019-14896).

A stack-based buffer overflow was found in the Linux kernel, in Marvell WiFi chip driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and connects to another STA (CVE-2019-14897).

ext4_empty_dir in fs/ext4/namei.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because ext4_read_dirblock(inode,0,DIRENT_HTREE) can be zero. (CVE-2019-19037)

KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed (CVE-2020-8428).

The openSUSE Leap 15.1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2019-14615: Insufficient control flow in certain data structures for some Intel(R) Processors with Intel(R) Processor Graphics may have allowed an unauthenticated user to potentially enable information disclosure via local access (bnc#1160195 bnc#1165881).
• CVE-2019-14896: A heap-based buffer overflow vulnerability was found in the Marvell WiFi chip driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP (bnc#1157157).
• CVE-2019-14897: A stack-based buffer overflow was found in the Marvell WiFi chip driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and connects to another STA (bnc#1157155).
• CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c. It did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107).
• CVE-2019-16994: In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c when register_netdev() fails to register sitn->fb_tunnel_dev, which may cause denial of service, aka CID-07f12b26e21a (bnc#1161523).
• CVE-2019-18808: A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption), aka CID-128c66429247 (bnc#1156259).
• CVE-2019-19036: btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-19045: A memory leak in the mlx5_fpga_conn_create_cq() function in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).
• CVE-2019-19051: A memory leak in the i2400m_op_rfkill_sw_toggle() function in drivers/net/wimax/i2400m/op-rfkill.c allowed attackers to cause a denial of service (memory consumption), aka CID-6f3ef5c25cc7 (bnc#1159024).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).
• CVE-2019-19066: A memory leak in the bfad_im_get_stats() function in drivers/scsi/bfa/bfad_attr.c allowed attackers to cause a denial of service (memory consumption) by triggering bfa_port_get_stats() failures, aka CID-0e62395da2bd (bnc#1157303).
• CVE-2019-19318: Mounting a crafted btrfs image twice can cause an rwsem_down_write_slowpath use-after-free because (in rwsem_can_spin_on_owner in kernel/locking/rwsem (bnc#1158026).
• CVE-2019-19319: A setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call (bnc#1158021).
• CVE-2019-19332: An out-of-bounds memory write issue was found in the way the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use this flaw to crash the system, resulting in a denial of service (bnc#1158827).
• CVE-2019-19338: There was an incomplete fix for Transaction Asynchronous Abort (TAA) (bnc#1158954).
• CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list in fs/ext4/super.c (bnc#1158819).
• CVE-2019-19526: There was a use-after-free bug that can be…

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

The following security bugs were fixed:

• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-14896: A heap-based buffer overflow vulnerability was found in the Marvell WiFi driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP (bnc#1157157).
• CVE-2019-14897: A stack-based buffer overflow was found in the Marvell WiFi driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and connects to another STA (bnc#1157155).
• CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c. It did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service, aka CID-07f12b26e21a (bnc#1161523).
• CVE-2019-18808: A memory leak in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption), aka CID-128c66429247 (bnc#1156259).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).
• CVE-2019-19051: A memory leak in drivers/net/wimax/i2400m/op-rfkill.c allowed attackers to cause a denial of service (memory consumption), aka CID-6f3ef5c25cc7 (bnc#1159024).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).
• CVE-2019-19066: A memory leak in drivers/scsi/bfa/bfad_attr.c allowed attackers to cause a denial of service (memory consumption), aka CID-0e62395da2bd (bnc#1157303).
• CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).
• CVE-2019-19319: A slab-out-of-bounds write access could have occured when setxattr was called after mounting of a specially crafted ext4 image (bnc#1158021).
• CVE-2019-19332: An out-of-bounds memory write issue was found in the way the KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could have used this flaw to crash the system (bnc#1158827).
• CVE-2019-19338: There was an incomplete fix for an issue with Transactional Synchronisation Extensions in the KVM code (bsc#1158954).
• CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting could have led to a use-after-free in fs/ext4/super.c (bnc#1158819).
• CVE-2019-19523: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79 (bsc#1158823).
• CVE-2019-19526: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/nfc/pn533/usb.c driver, aka CID-6af3aa57a098 (bsc#1158893).
• CVE-2019-19527: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver, aka CID-9c09b214f30e (bsc#1158900).
• CVE-2019-19532: There were multiple out-of-bounds write bugs that can be caused by a malicious USB HID device, aka CID-d9d4b1e46d95 (bsc#1158824). -…

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

The following security bugs were fixed:

• CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest may trick the L0 hypervisor into accessing sensitive L1 resources (bsc#1163971).
• CVE-2020-8992: An issue was discovered in ext4_protect_reserved_inode in fs/ext4/block_validity.c that allowed attackers to cause a soft lockup via a crafted journal size (bnc#1164069).
• CVE-2020-8648: There was a use-after-free vulnerability in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bnc#1162928).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service or possibly obtain sensitive information from kernel memory (bnc#1162109).
• CVE-2020-7053: There was a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c (bnc#1160966).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures (bnc#1161522).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service (bnc#1161523).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures (bnc#1161518).
• CVE-2019-14896: A heap overflow was found in the add_ie_rates() function of the Marvell Wifi Driver (bsc#1157157).
• CVE-2019-14897: A stack overflow was found in the lbs_ibss_join_existing() function of the Marvell Wifi Driver (bsc#1157155).
• CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-19965: There was a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race condition (bnc#1159911).
• CVE-2019-19927: Fixed an out-of-bounds read access when mounting a crafted f2fs filesystem image and performing some operations, related to ttm_put_pages in drivers/gpu/drm/ttm/ttm_page_alloc.c (bnc#1160147).

The following non-security bugs were fixed:

• 6pack,mkiss: fix possible deadlock (bsc#1051510).
• ACPI / APEI: Switch estatus pool to use vmalloc memory (bsc#1051510).
• ACPI: fix acpi_find_child_device() invocation in acpi_preset_companion() (bsc#1051510).
• ACPI: PM: Avoid attaching ACPI PM domain to certain devices (bsc#1051510).
• ACPI / video: Add force_none quirk for Dell OptiPlex 9020M (bsc#1051510).
• ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards (bsc#1051510).
• ACPI: watchdog: Allow disabling WDAT at boot (bsc#1162557).
• ACPI / watchdog: Fix init failure with overlapping register regions (bsc#1162557).
• ACPI / watchdog: Set default timeout in probe (bsc#1162557).
• af_packet: set defaule value for tmo (bsc#1051510).
• ALSA: control: remove useless assignment in .info callback of PCM chmap element (git-fixes).
• ALSA: dummy: Fix PCM format loop in proc output (bsc#1111666).
• ALSA: hda: Add Clevo W65_67SB the power_save blacklist (git-fixes).
• ALSA: hda - Add docking station support for Lenovo Thinkpad T420s (git-fixes).
• ALSA: hda: Add JasperLake PCI ID and codec vid (bsc#1111666).
• ALSA: hda/analog - Minor optimization for SPDIF mux connections (git-fixes).
• ALSA: hda - Apply sync-write workaround to old Intel platforms, too (bsc#1111666).
• ALSA: hda: Clear RIRB status before…

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

The following security bugs were fixed:

• CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest may trick the L0 hypervisor into accessing sensitive L1 resources (bsc#1163971).
• CVE-2020-8992: An issue was discovered in ext4_protect_reserved_inode in fs/ext4/block_validity.c that allowed attackers to cause a soft lockup via a crafted journal size (bnc#1164069).
• CVE-2020-8648: There was a use-after-free vulnerability in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bnc#1162928).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service or possibly obtain sensitive information from kernel memory (bnc#1162109).
• CVE-2020-7053: There was a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c (bnc#1160966).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures (bnc#1161522).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service (bnc#1161523).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures (bnc#1161518).
• CVE-2019-14896: A heap overflow was found in the add_ie_rates() function of the Marvell Wifi Driver (bsc#1157157).
• CVE-2019-14897: A stack overflow was found in the lbs_ibss_join_existing() function of the Marvell Wifi Driver (bsc#1157155).
• CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-19965: There was a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race condition (bnc#1159911).
• CVE-2019-20095: Fixed a memory leak and denial of service in mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c, where some error-handling cases did not free allocated hostcmd memory (bnc#1159909).
• CVE-2019-20054: Fixed a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c related to put_links (bnc#1159910).
• CVE-2019-20096: Fixed a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service (bnc#1159908).
• CVE-2019-19966: Fixed a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service (bnc#1159841).
• CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting could have led to a use-after-free in fs/ext4/super.c (bnc#1158819).
• CVE-2019-19319: A setxattr operation, after a mount of a crafted ext4 image, could cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call (bnc#1158021).
• CVE-2019-19767: The Linux kernel mishandled ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c (bnc#1159297).
• CVE-2019-18808: A memory leak in the ccp_run_sha_cmd() in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption) (bnc#1156259).
• CVE-2019-19066: A memory leak in the bfad_im_get_stats() in drivers/scsi/bfa/bfad_attr.c allowed attackers…

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

The following security bugs were fixed:

• CVE-2020-8992: An issue was discovered in ext4_protect_reserved_inode in fs/ext4/block_validity.c that allowed attackers to cause a soft lockup via a crafted journal size (bnc#1164069).
• CVE-2020-8648: There was a use-after-free vulnerability in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bnc#1162928).
• CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c. It did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9 (bnc#1162109).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service, aka CID-07f12b26e21a (bnc#1161523).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).
• CVE-2019-14896: A heap-based buffer overflow vulnerability was found in the Marvell WiFi driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP (bnc#1157157).
• CVE-2019-14897: A stack-based buffer overflow was found in the Marvell WiFi driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and connects to another STA (bnc#1157155).
• CVE-2020-7053: There was a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c, aka CID-7dc40713618c (bnc#1160966).
• CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-19965: There was a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race condition, aka CID-f70267f379b5 (bnc#1159911).
• CVE-2019-19927: A slab-out-of-bounds read access could have been caused when mounting a crafted f2fs filesystem image and performing some operations on it, in drivers/gpu/drm/ttm/ttm_page_alloc.c (bnc#1160147).
• CVE-2019-20095: Several memory leaks were found in drivers/net/wireless/marvell/mwifiex/cfg80211.c, aka CID-003b686ace82 (bnc#1159909).
• CVE-2019-20054: There was a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e (bnc#1159910).
• CVE-2019-20096: There was a memory leak in __feat_register_sp() in net/dccp/feat.c, aka CID-1d3ff0950e2b (bnc#1159908).
• CVE-2019-19966: There was a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that could have caused a denial of service, aka CID-dea37a972655 (bnc#1159841).
• CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting could have led to a use-after-free in fs/ext4/super.c (bnc#1158819).
• CVE-2019-19319: A slab-out-of-bounds write…

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

The following security bugs were fixed:

• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-14896: A heap-based buffer overflow vulnerability was found in the Marvell WiFi driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP (bnc#1157157).
• CVE-2019-14897: A stack-based buffer overflow was found in the Marvell WiFi driver. An attacker is able to cause a denial of service (system crash) or, possibly execute arbitrary code, when a STA works in IBSS mode (allows connecting stations together without the use of an AP) and connects to another STA (bnc#1157155).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service, aka CID-07f12b26e21a (bnc#1161523).
• CVE-2019-18808: A memory leak in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption), aka CID-128c66429247 (bnc#1156259).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).
• CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).
• CVE-2019-19319: A slab-out-of-bounds write access could have occured when setxattr was called after mounting of a specially crafted ext4 image (bnc#1158021).
• CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting could have led to a use-after-free in fs/ext4/super.c (bnc#1158819).
• CVE-2019-19767: There were multiple use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163 (bnc#1159297).
• CVE-2019-19927: A slab-out-of-bounds read access occured when mounting a crafted f2fs filesystem image and performing some operations on it (bnc#1160147).
• CVE-2019-19965: There was a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race condition, aka CID-f70267f379b5 (bnc#1159911).
• CVE-2019-19966: There was a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that could have caused a denial of service, aka CID-dea37a972655 (bnc#1159841).
• CVE-2019-20054: There was a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e (bnc#1159910).
• CVE-2019-20095: Several memory leaks were found in drivers/net/wireless/marvell/mwifiex/cfg80211.c, aka CID-003b686ace82 (bnc#1159909).
• CVE-2019-20096: There was a memory leak in __feat_register_sp() in net/dccp/feat.c, aka CID-1d3ff0950e2b (bnc#1159908).
• CVE-2020-7053: There was a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c, aka CID-7dc40713618c (bnc#1160966).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9 (bnc#1162109).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed…

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

The following security bugs were fixed:

• CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest may trick the L0 hypervisor into accessing sensitive L1 resources (bsc#1163971).
• CVE-2019-19338: There was an incomplete fix for an issue with Transactional Synchronisation Extensions in the KVM code (bsc#1158954).
• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-14896: A heap overflow was found in the add_ie_rates() function of the Marvell Wifi Driver (bsc#1157157).
• CVE-2019-14897: A stack overflow was found in the lbs_ibss_join_existing() function of the Marvell Wifi Driver (bsc#1157155).
• CVE-2019-15213: A use-after-free bug caused by a malicious USB device was found in drivers/media/usb/dvb-usb/dvb-usb-init.c (bsc#1146544).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service, aka CID-07f12b26e21a (bnc#1161523).
• CVE-2019-18808: A memory leak in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption), aka CID-128c66429247 (bnc#1156259).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).
• CVE-2019-19051: A memory leak in drivers/net/wimax/i2400m/op-rfkill.c allowed attackers to cause a denial of service (memory consumption), aka CID-6f3ef5c25cc7 (bnc#1159024).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).
• CVE-2019-19066: A memory leak in drivers/scsi/bfa/bfad_attr.c allowed attackers to cause a denial of service (memory consumption), aka CID-0e62395da2bd (bnc#1157303).
• CVE-2019-19318: Mounting a crafted btrfs image twice could have caused a use-after-free (bnc#1158026).
• CVE-2019-19319: A slab-out-of-bounds write access could have occured when setxattr was called after mounting of a specially crafted ext4 image (bnc#1158021).
• CVE-2019-19332: An out-of-bounds memory write issue was found in the way the KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could have used this flaw to crash the system (bnc#1158827).
• CVE-2019-19447: Mounting a crafted ext4 filesystem image, performing some operations, and unmounting could have led to a use-after-free in fs/ext4/super.c (bnc#1158819).
• CVE-2019-19523: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79 (bsc#1158823).
• CVE-2019-19524: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9 (bsc#1158413).
• CVE-2019-19525: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver, aka CID-7fd25e6fc035 (bsc#1158417).
• CVE-2019-19526: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/nfc/pn533/usb.c driver, aka CID-6af3aa57a098 (bsc#1158893).
• CVE-2019-19527: There was a use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver, aka CID-9c09b214f30e (bsc#1158900).
• CVE-2019-19528: There was a use-after-free bug that can be caused by a…

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

The following security bugs were fixed:

• CVE-2019-14615: An information disclosure vulnerability existed due to insufficient control flow in certain data structures for some Intel(R) Processors (bnc#1160195).
• CVE-2019-14895: A heap-based buffer overflow was discovered in the Marvell WiFi driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could allow the remote device to cause a denial of service or possibly execute arbitrary code (bnc#1157158).
• CVE-2019-14896: A heap overflow was found in the add_ie_rates() function of the Marvell Wifi Driver (bsc#1157157).
• CVE-2019-14897: A stack overflow was found in the lbs_ibss_join_existing() function of the Marvell Wifi Driver (bsc#1157155).
• CVE-2019-14901: A heap overflow flaw was found in the Marvell WiFi driver. The vulnerability allowed a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code (bnc#1157042).
• CVE-2019-15213: A use-after-free bug caused by a malicious USB device was found in drivers/media/usb/dvb-usb/dvb-usb-init.c (bsc#1146544).
• CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c. The check for the length of variable elements in a beacon head was insufficient, leading to a buffer overflow (bnc#1152107).
• CVE-2019-16994: A memory leak existed in sit_init_net() in net/ipv6/sit.c which might have caused denial of service, aka CID-07f12b26e21a (bnc#1161523).
• CVE-2019-18660: An information disclosure bug occured because the Spectre-RSB mitigation were not in place for all applicable CPUs, aka CID-39e72bf96f58 (bnc#1157038).
• CVE-2019-18683: Multiple race conditions were discovered in drivers/media/platform/vivid. It was exploitable for privilege escalation if local users had access to /dev/video0, but only if the driver happened to be loaded. At least one of these race conditions led to a use-after-free (bnc#1155897).
• CVE-2019-18808: A memory leak in drivers/crypto/ccp/ccp-ops.c allowed attackers to cause a denial of service (memory consumption), aka CID-128c66429247 (bnc#1156259).
• CVE-2019-18809: A memory leak in drivers/media/usb/dvb-usb/af9005.c allowed attackers to cause a denial of service (memory consumption), aka CID-2289adbfa559 (bnc#1156258).
• CVE-2019-19036: An issue discovered in btrfs_root_node in fs/btrfs/ctree.c allowed a NULL pointer dereference because rcu_dereference(root->node) can be zero (bnc#1157692).
• CVE-2019-19045: A memory leak in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c allowed attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7 (bnc#1161522).
• CVE-2019-19046: There was a memory leak in __ipmi_bmc_register (bsc#1157304).
• CVE-2019-19049: There was an unlikely memory leak in unittest_data_add (bsc#1157173).
• CVE-2019-19051: A memory leak in drivers/net/wimax/i2400m/op-rfkill.c allowed attackers to cause a denial of service (memory consumption), aka CID-6f3ef5c25cc7 (bnc#1159024).
• CVE-2019-19052: A memory leak in drivers/net/can/usb/gs_usb.c allowed attackers to cause a denial of service (memory consumption), aka CID-fb5be6a7b486 (bnc#1157324).
• CVE-2019-19054: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allowed attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b (bnc#1161518).
• CVE-2019-19056: A memory leak in drivers/net/wireless/marvell/mwifiex/pcie.c allowed attackers to cause a denial of service (memory consumption), aka CID-db8fd2cde932 (bnc#1157197).
• CVE-2019-19057: Two memory leaks in drivers/net/wireless/marvell/mwifiex/pcie.c allowed attackers to cause a denial of service (memory consumption), aka CID-d10dcb615c8e (bnc#1157193 bsc#1157197).
• CVE-2019-19058:…

The SUSE Linux Enterprise 12-SP4 kernel-RT was updated to 4.12.14 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-8992: Fixed an issue in ext4_protect_reserved_inode in fs/ext4/block_validity.c that allowed attackers to cause a soft lockup via a crafted journal size (bsc#1164069).
• CVE-2020-8648: Fixed a use-after-free vulnerability in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bsc#1162928).
• CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest may trick the L0 hypervisor into accessing sensitive L1 resources (bsc#1163971).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9 (bsc#1162109).

The following non-security bugs were fixed:

• 6pack,mkiss: fix possible deadlock (bsc#1051510).
• ACPI / APEI: Switch estatus pool to use vmalloc memory (bsc#1051510).
• ACPI: PM: Avoid attaching ACPI PM domain to certain devices (bsc#1051510).
• ACPI / video: Add force_none quirk for Dell OptiPlex 9020M (bsc#1051510).
• ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards (bsc#1051510).
• ACPI: watchdog: Allow disabling WDAT at boot (bsc#1162557).
• ACPI / watchdog: Fix init failure with overlapping register regions (bsc#1162557).
• ACPI / watchdog: Set default timeout in probe (bsc#1162557).
• ALSA: hda/realtek - Fix silent output on MSI-GL73 (git-fixes).
• ALSA: hda: Reset stream if DMA RUN bit not cleared (bsc#1111666).
• ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs (git-fixes).
• ALSA: seq: Avoid concurrent access to queue flags (git-fixes).
• ALSA: seq: Fix concurrent access to queue current tick/time (git-fixes).
• ALSA: usb-audio: Apply sample rate quirk for Audioengine D1 (git-fixes).
• arm64: Revert support for execute-only user mappings (bsc#1160218).
• ASoC: sun8i-codec: Fix setting DAI data format (git-fixes).
• ata: ahci: Add shutdown to freeze hardware resources of ahci (bsc#1164388).
• bcache: add code comment bch_keylist_pop() and bch_keylist_pop_front() (bsc#1163762).
• bcache: add code comments for state->pool in __btree_sort() (bsc#1163762).
• bcache: add code comments in bch_btree_leaf_dirty() (bsc#1163762).
• bcache: add cond_resched() in __bch_cache_cmp() (bsc#1163762).
• bcache: add idle_max_writeback_rate sysfs interface (bsc#1163762).
• bcache: add more accurate error messages in read_super() (bsc#1163762).
• bcache: add readahead cache policy options via sysfs interface (bsc#1163762).
• bcache: at least try to shrink 1 node in bch_mca_scan() (bsc#1163762).
• bcache: avoid unnecessary btree nodes flushing in btree_flush_write() (bsc#1163762).
• bcache: check return value of prio_read() (bsc#1163762).
• bcache: deleted code comments for dead code in bch_data_insert_keys() (bsc#1163762).
• bcache: do not export symbols (bsc#1163762).
• bcache: explicity type cast in bset_bkey_last() (bsc#1163762).
• bcache: fix a lost wake-up problem caused by mca_cannibalize_lock (bsc#1163762).
• bcache: Fix an error code in bch_dump_read() (bsc#1163762).
• bcache: fix deadlock in bcache_allocator (bsc#1163762).
• bcache: fix incorrect data type usage in btree_flush_write() (bsc#1163762).
• bcache: fix memory corruption in bch_cache_accounting_clear() (bsc#1163762).
• bcache: fix static checker warning in bcache_device_free() (bsc#1163762).
• bcache: ignore pending signals when creating gc and allocator thread (bsc#1163762, bsc#1112504).
• bcache: print written and keys in trace_bcache_btree_write (bsc#1163762).
• bcache: reap c->btree_cache_freeable from the tail in bch_mca_scan() (bsc#1163762).
• bcache: reap from tail of c->btree_cache in bch_mca_scan() (bsc#1163762).
• bcache: remove macro nr_to_fifo_front() (bsc#1163762).
• bcache: remove member accessed from struct btree (bsc#1163762).
• bcache: remove the extra cflags for request.o…

The SUSE Linux Enterprise 12-SP5 kernel-RT was updated to 4.12.14 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-8992: Fixed an issue in ext4_protect_reserved_inode in fs/ext4/block_validity.c that allowed attackers to cause a soft lockup via a crafted journal size (bsc#1164069).
• CVE-2020-8648: Fixed a use-after-free vulnerability in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bsc#1162928).
• CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest may trick the L0 hypervisor into accessing sensitive L1 resources (bsc#1163971).
• CVE-2019-16746: There was an issue in net/wireless/nl80211.c where the kernel did not check the length of variable elements in a beacon head, leading to a buffer overflow (bsc#1152107).
• CVE-2020-8428: There was a use-after-free bug in fs/namei.c, which allowed local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9 (bsc#1162109).
• CVE-2019-14895: Fixed a heap-based buffer overflow in Marvell WiFi chip driver which could have led to denial of service or possibly execute arbitrary code (bsc#1157042).

The following non-security bugs were fixed:

• 6pack,mkiss: fix possible deadlock (bsc#1051510).
• ACPI / APEI: Switch estatus pool to use vmalloc memory (bsc#1051510).
• ACPI: fix acpi_find_child_device() invocation in acpi_preset_companion() (bsc#1051510).
• ACPI: PM: Avoid attaching ACPI PM domain to certain devices (bsc#1051510).
• ACPI / video: Add force_none quirk for Dell OptiPlex 9020M (bsc#1051510).
• ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards (bsc#1051510).
• ACPI: watchdog: Allow disabling WDAT at boot (bsc#1162557).
• ACPI / watchdog: Fix init failure with overlapping register regions (bsc#1162557).
• ACPI / watchdog: Set default timeout in probe (bsc#1162557).
• af_packet: set defaule value for tmo (bsc#1051510).
• ALSA: control: remove useless assignment in .info callback of PCM chmap element (git-fixes).
• ALSA: dummy: Fix PCM format loop in proc output (bsc#1111666).
• ALSA: hda: Add Clevo W65_67SB the power_save blacklist (git-fixes).
• ALSA: hda - Add docking station support for Lenovo Thinkpad T420s (git-fixes).
• ALSA: hda: Add JasperLake PCI ID and codec vid (bsc#1111666).
• ALSA: hda/analog - Minor optimization for SPDIF mux connections (git-fixes).
• ALSA: hda: Clear RIRB status before reading WP (bsc#1111666).
• ALSA: hda - constify and cleanup static NodeID tables (bsc#1111666).
• ALSA: hda: constify copied structure (bsc#1111666).
• ALSA: hda: Constify snd_kcontrol_new items (bsc#1111666).
• ALSA: hda: Constify snd_pci_quirk tables (bsc#1111666).
• ALSA: hda: correct kernel-doc parameter descriptions (bsc#1111666).
• ALSA: hda/hdmi - add retry logic to parse_intel_hdmi() (git-fixes).
• ALSA: hda: hdmi - add Tigerlake support (bsc#1111666).
• ALSA: hda/hdmi - Clean up Intel platform-specific fixup checks (bsc#1111666).
• ALSA: hda: hdmi - fix pin setup on Tigerlake (bsc#1111666).
• ALSA: hda: More constifications (bsc#1111666).
• ALSA: hda: patch_hdmi: remove warnings with empty body (bsc#1111666).
• ALSA: hda: patch_realtek: fix empty macro usage in if block (bsc#1111666).
• ALSA: hda/realtek - Add Headset Mic supported for HP cPC (bsc#1111666).
• ALSA: hda/realtek - Apply mic mute LED quirk for Dell E7xx laptops, too (bsc#1111666).
• ALSA: hda/realtek - Fixed one of HP ALC671 platform Headset Mic supported (bsc#1111666).
• ALSA: hda/realtek - Fix silent output on MSI-GL73 (git-fixes).
• ALSA: hda/realtek - More constifications (bsc#1111666).
• ALSA: hda: Reset stream if DMA RUN bit not cleared (bsc#1111666).
• ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs (git-fixes).
• ALSA: seq: Avoid concurrent access to queue flags (git-fixes).
• ALSA: seq: Fix concurrent access to queue current tick/time (git-fixes).
• ALSA: sh: Fix compile warning wrt const (git-fixes).
• ALSA:…

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

The following security bugs were fixed:

• CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it. This attack is known as Special Register Buffer Data Sampling (SRBDS) or 'CrossTalk' (bsc#1154824).
• CVE-2020-9383: Fixed an out-of-bounds read due to improper error condition check of FDC index (bsc#1165111).
• CVE-2020-8992: Fixed an issue which could have allowed attackers to cause a soft lockup via a crafted journal size (bsc#1164069).
• CVE-2020-8834: Fixed a stack corruption which could have lead to kernel panic (bsc#1168276).
• CVE-2020-8649: Fixed a use-after-free in the vgacon_invert_region function in drivers/video/console/vgacon.c (bsc#1162931).
• CVE-2020-8648: Fixed a use-after-free in the n_tty_receive_buf_common function in drivers/tty/n_tty.c (bsc#1162928).
• CVE-2020-8647: Fixed a use-after-free in the vc_do_resize function in drivers/tty/vt/vt.c (bsc#1162929).
• CVE-2020-8428: Fixed a use-after-free which could have allowed local users to cause a denial of service (bsc#1162109).
• CVE-2020-7053: Fixed a use-after-free in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c (bsc#1160966).
• CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest may trick the L0 hypervisor into accessing sensitive L1 resources (bsc#1163971).
• CVE-2020-13143: Fixed an out-of-bounds read in gadget_dev_desc_UDC_store in drivers/usb/gadget/configfs.c (bsc#1171982).
• CVE-2020-12769: Fixed an issue which could have allowed attackers to cause a panic via concurrent calls to dw_spi_irq and dw_spi_transfer_one (bsc#1171983).
• CVE-2020-12657: An a use-after-free in block/bfq-iosched.c (bsc#1171205).
• CVE-2020-12656: Fixed an improper handling of certain domain_release calls leadingch could have led to a memory leak (bsc#1171219).
• CVE-2020-12655: Fixed an issue which could have allowed attackers to trigger a sync of excessive duration via an XFS v5 image with crafted metadata (bsc#1171217).
• CVE-2020-12654: Fixed an issue in he wifi driver which could have allowed a remote AP to trigger a heap-based buffer overflow (bsc#1171202).
• CVE-2020-12653: Fixed an issue in the wifi driver which could have allowed local users to gain privileges or cause a denial of service (bsc#1171195).
• CVE-2020-12652: Fixed an issue which could have allowed local users to hold an incorrect lock during the ioctl operation and trigger a race condition (bsc#1171218).
• CVE-2020-12464: Fixed a use-after-free due to a transfer without a reference (bsc#1170901).
• CVE-2020-12114: Fixed a pivot_root race condition which could have allowed local users to cause a denial of service (panic) by corrupting a mountpoint reference counter (bsc#1171098).
• CVE-2020-11669: Fixed an issue where arch/powerpc/kernel/idle_book3s.S did not have save/restore functionality for PNV_POWERSAVE_AMR, PNV_POWERSAVE_UAMOR, and PNV_POWERSAVE_AMOR (bnc#1169390).
• CVE-2020-11609: Fixed a null pointer dereference due to improper handling of descriptors (bsc#1168854).
• CVE-2020-11608: Fixed a null pointer dereferences via a crafted USB (bsc#1168829).
• CVE-2020-11494: Fixed an issue which could have allowed attackers to read uninitialized can_frame data (bsc#1168424).
• CVE-2020-10942: Fixed a kernel stack corruption via crafted system calls (bsc#1167629).
• CVE-2020-10757: Fixed an issue where remaping hugepage DAX to anon mmap could have caused user PTE access (bsc#1172317).
• CVE-2020-10751: Fixed an improper implementation in SELinux LSM hook where it was assumed that an skb would only contain a single netlink message (bsc#1171189).
• CVE-2020-10732: Fixed kernel data leak in userspace coredumps due to uninitialized data (bsc#1171220).
• CVE-2020-10720: Fixed a use-after-free read in napi_gro_frags() (bsc#1170778).
• CVE-2020-10711: Fixed a null pointer…

Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)

Gustavo Romero and Paul Mackerras discovered that the KVM implementation in the Linux kernel for PowerPC processors did not properly keep guest state separate from host state. A local attacker in a KVM guest could use this to cause a denial of service (host system crash). (CVE-2020-8834)

Shijie Luo discovered that the ext4 file system implementation in the Linux kernel did not properly check for a too-large journal size. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (soft lockup). (CVE-2020-8992)

It was discovered that the IPMI message handler implementation in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19046)

Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)

Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory).

Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)

Shijie Luo discovered that the ext4 file system implementation in the Linux kernel did not properly check for a too-large journal size. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (soft lockup). (CVE-2020-8992)

It was discovered that the IPMI message handler implementation in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19046)

Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)