CVE-2017-16994

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call.

This kernel update is based on upstream 4.4.105 and fixes at least the following security issues:

A security flaw was discovered in nl80211_set_rekey_data() function in the Linux kernel since v3.1-rc1 through v4.13. This function does not check whether the required attributes are present in a netlink request. This request can be issued by a user with CAP_NET_ADMIN privilege and may result in NULL dereference and a system crash (CVE-2017-12153).

Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization (nVMX) feature enabled (nested=1), is vulnerable to a crash due to disabled external interrupts. As L2 guest could acce s (r/w) hardware CR8 register of the host(L0). In a nested visualization setup, L2 guest user could use this flaw to potentially crash the host(L0) resulting in DoS (CVE-2017-12154).

The tcp_disconnect function in net/ipv4/tcp.c in the Linux kernel before 4.12 allows local users to cause a denial of service (__tcp_select_window divide-by-zero error and system crash) by triggering a disconnect within a certain tcp_recvmsg code path (CVE-2017-14106).

The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory by reading locations associated with padding bytes (CVE-2017-14156).

It was found that the iscsi_if_rx() function in scsi_transport_iscsi.c in the Linux kernel since v2.6.24-rc1 through 4.13.2 allows local users to cause a denial of service (a system panic) by making a number of certain syscalls by leveraging incorrect length validation in the kernel code (CVE-2017-14489).

The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl call for /dev/sg0 (CVE-2017-14991).

A reachable assertion failure flaw was found in the Linux kernel built with KVM virtualisation(CONFIG_KVM) support with Virtual Function I/O feature (CONFIG_VFIO) enabled. This failure could occur if a malicious guest device sent a virtual interrupt (guest IRQ) with a larger (>1024) index value (CVE-2017-1000252).

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

This kernel-tmb update is based on upstream 4.4.105 and fixes at least the following security issues:

A security flaw was discovered in nl80211_set_rekey_data() function in the Linux kernel since v3.1-rc1 through v4.13. This function does not check whether the required attributes are present in a netlink request. This request can be issued by a user with CAP_NET_ADMIN privilege and may result in NULL dereference and a system crash (CVE-2017-12153).

Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization (nVMX) feature enabled (nested=1), is vulnerable to a crash due to disabled external interrupts. As L2 guest could acce s (r/w) hardware CR8 register of the host(L0). In a nested visualization setup, L2 guest user could use this flaw to potentially crash the host(L0) resulting in DoS (CVE-2017-12154).

The tcp_disconnect function in net/ipv4/tcp.c in the Linux kernel before 4.12 allows local users to cause a denial of service (__tcp_select_window divide-by-zero error and system crash) by triggering a disconnect within a certain tcp_recvmsg code path (CVE-2017-14106).

The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory by reading locations associated with padding bytes (CVE-2017-14156).

It was found that the iscsi_if_rx() function in scsi_transport_iscsi.c in the Linux kernel since v2.6.24-rc1 through 4.13.2 allows local users to cause a denial of service (a system panic) by making a number of certain syscalls by leveraging incorrect length validation in the kernel code (CVE-2017-14489).

The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl call for /dev/sg0 (CVE-2017-14991).

A reachable assertion failure flaw was found in the Linux kernel built with KVM virtualisation(CONFIG_KVM) support with Virtual Function I/O feature (CONFIG_VFIO) enabled. This failure could occur if a malicious guest device sent a virtual interrupt (guest IRQ) with a larger (>1024) index value (CVE-2017-1000252).

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

This kernel-linus update is based on upstream 4.4.105 and fixes at least the following security issues:

A security flaw was discovered in nl80211_set_rekey_data() function in the Linux kernel since v3.1-rc1 through v4.13. This function does not check whether the required attributes are present in a netlink request. This request can be issued by a user with CAP_NET_ADMIN privilege and may result in NULL dereference and a system crash (CVE-2017-12153).

Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization (nVMX) feature enabled (nested=1), is vulnerable to a crash due to disabled external interrupts. As L2 guest could acce s (r/w) hardware CR8 register of the host(L0). In a nested visualization setup, L2 guest user could use this flaw to potentially crash the host(L0) resulting in DoS (CVE-2017-12154).

The tcp_disconnect function in net/ipv4/tcp.c in the Linux kernel before 4.12 allows local users to cause a denial of service (__tcp_select_window divide-by-zero error and system crash) by triggering a disconnect within a certain tcp_recvmsg code path (CVE-2017-14106).

The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory by reading locations associated with padding bytes (CVE-2017-14156).

It was found that the iscsi_if_rx() function in scsi_transport_iscsi.c in the Linux kernel since v2.6.24-rc1 through 4.13.2 allows local users to cause a denial of service (a system panic) by making a number of certain syscalls by leveraging incorrect length validation in the kernel code (CVE-2017-14489).

The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl call for /dev/sg0 (CVE-2017-14991).

A reachable assertion failure flaw was found in the Linux kernel built with KVM virtualisation(CONFIG_KVM) support with Virtual Function I/O feature (CONFIG_VFIO) enabled. This failure could occur if a malicious guest device sent a virtual interrupt (guest IRQ) with a larger (>1024) index value (CVE-2017-1000252).

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

This kernel update provides an upgrade to the 4.14 longterm branch, currently based on 4.14.10. It also fixes at least the following security issues:

An elevation of privilege vulnerability in the Broadcom wi-fi driver (CVE-2017-0786).

Use-after-free vulnerability in the snd_pcm_info function in the ALSA subsystem in the Linux kernel allows attackers to gain privileges via unspecified vectors (CVE-2017-0861).

Linux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM) support is vulnerable to an incorrect debug exception(#DB) error. It could occur while emulating a syscall instruction. A user/process inside guest could use this flaw to potentially escalate their privileges inside guest. Linux guests are not affected.(CVE-2017-7518).

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun" (CVE-2017-12188).

The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition (CVE-2017-12190).

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations (CVE-2017-12193).

Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Group Temporal Key (GTK) during the group key handshake, allowing an attacker within radio range to replay frames from access points to clients (CVE-2017-13080).

The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls (CVE-2017-15115).

Race condition in the ALSA subsystem in the Linux kernel before 4.13.8 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c (CVE-2017-15265)

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call (CVE-2017-15299).

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages (CVE-2017-16939).

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call (CVE-2017-16994).

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging…

This kernel-tmb update provides an upgrade to the 4.14 longterm branch, currently based on 4.14.10. It also fixes at least the following security issues:

An elevation of privilege vulnerability in the Broadcom wi-fi driver (CVE-2017-0786).

Use-after-free vulnerability in the snd_pcm_info function in the ALSA subsystem in the Linux kernel allows attackers to gain privileges via unspecified vectors (CVE-2017-0861).

Linux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM) support is vulnerable to an incorrect debug exception(#DB) error. It could occur while emulating a syscall instruction. A user/process inside guest could use this flaw to potentially escalate their privileges inside guest. Linux guests are not affected.(CVE-2017-7518).

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun" (CVE-2017-12188).

The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition (CVE-2017-12190).

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations (CVE-2017-12193).

Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Group Temporal Key (GTK) during the group key handshake, allowing an attacker within radio range to replay frames from access points to clients (CVE-2017-13080).

The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls (CVE-2017-15115).

Race condition in the ALSA subsystem in the Linux kernel before 4.13.8 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c (CVE-2017-15265)

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call (CVE-2017-15299).

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages (CVE-2017-16939).

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call (CVE-2017-16994).

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging…

This kernel-linus update provides an upgrade to the 4.14 longterm branch, currently based on 4.14.10. It also fixes at least the following security issues:

An elevation of privilege vulnerability in the Broadcom wi-fi driver (CVE-2017-0786).

Use-after-free vulnerability in the snd_pcm_info function in the ALSA subsystem in the Linux kernel allows attackers to gain privileges via unspecified vectors (CVE-2017-0861).

Linux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM) support is vulnerable to an incorrect debug exception(#DB) error. It could occur while emulating a syscall instruction. A user/process inside guest could use this flaw to potentially escalate their privileges inside guest. Linux guests are not affected.(CVE-2017-7518).

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun" (CVE-2017-12188).

The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition (CVE-2017-12190).

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations (CVE-2017-12193).

Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Group Temporal Key (GTK) during the group key handshake, allowing an attacker within radio range to replay frames from access points to clients (CVE-2017-13080).

The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls (CVE-2017-15115).

Race condition in the ALSA subsystem in the Linux kernel before 4.13.8 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c (CVE-2017-15265)

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call (CVE-2017-15299).

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages (CVE-2017-16939).

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call (CVE-2017-16994).

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging…

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.103 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2017-1000410: The Linux kernel was affected by an information lea that lies in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. (bnc#1070535).
• CVE-2017-11600: net/xfrm/xfrm_policy.c in the Linux kernel did not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allowed local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message (bnc#1050231).
• CVE-2017-12193: The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel mishandled node splitting, which allowed local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations (bnc#1066192).
• CVE-2017-15115: The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel did not check whether the intended netns is used in a peel-off action, which allowed local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls (bnc#1068671).
• CVE-2017-16528: sound/core/seq_device.c in the Linux kernel allowed local users to cause a denial of service (snd_rawmidi_dev_seq_free use-after-free and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1066629).
• CVE-2017-16536: The cx231xx_usb_probe function in drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1066606).
• CVE-2017-16537: The imon_probe function in drivers/media/rc/imon.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1066573).
• CVE-2017-16645: The ims_pcu_get_cdc_union_desc function in drivers/input/misc/ims-pcu.c in the Linux kernel allowed local users to cause a denial of service (ims_pcu_parse_cdc_data out-of-bounds read and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1067132).
• CVE-2017-16646: drivers/media/usb/dvb-usb/dib0700_devices.c in the Linux kernel allowed local users to cause a denial of service (BUG and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1067105).
• CVE-2017-16994: The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel mishandled holes in hugetlb ranges, which allowed local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call (bnc#1069996).
• CVE-2017-17448: net/netfilter/nfnetlink_cthelper.c in the Linux kernel did not require the CAP_NET_ADMIN capability for new, get, and del operations, which allowed local users to bypass intended access restrictions because the nfnl_cthelper_list data structure is shared across all net namespaces (bnc#1071693).
• CVE-2017-17449: The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel did not restrict observations of Netlink messages to a single net namespace, which allowed local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system (bnc#1071694).
• CVE-2017-17450: net/netfilter/xt_osf.c in the Linux kernel did not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allowed local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces (bnc#1071695).
• CVE-2017-7482: Fixed an overflow when…

The SUSE Linux Enterprise 12 SP2 kernel was updated to 4.4.103 to receive various security and bugfixes.

This update enables SMB encryption in the CIFS support in the Linux Kernel (fate#324404)

The following security bugs were fixed:

• CVE-2017-1000410: The Linux kernel was affected by an information leak in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. (bnc#1070535).
• CVE-2017-11600: net/xfrm/xfrm_policy.c in the Linux kernel did not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allowed local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message (bnc#1050231).
• CVE-2017-12193: The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel mishandled node splitting, which allowed local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations (bnc#1066192).
• CVE-2017-15115: The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel did not check whether the intended netns is used in a peel-off action, which allowed local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls (bnc#1068671).
• CVE-2017-15265: Race condition in the ALSA subsystem in the Linux kernel allowed local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c (bnc#1062520).
• CVE-2017-16528: sound/core/seq_device.c in the Linux kernel allowed local users to cause a denial of service (snd_rawmidi_dev_seq_free use-after-free and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1066629).
• CVE-2017-16536: The cx231xx_usb_probe function in drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1066606).
• CVE-2017-16537: The imon_probe function in drivers/media/rc/imon.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1066573).
• CVE-2017-16645: The ims_pcu_get_cdc_union_desc function in drivers/input/misc/ims-pcu.c in the Linux kernel allowed local users to cause a denial of service (ims_pcu_parse_cdc_data out-of-bounds read and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1067132).
• CVE-2017-16646: drivers/media/usb/dvb-usb/dib0700_devices.c in the Linux kernel allowed local users to cause a denial of service (BUG and system crash) or possibly have unspecified other impact via a crafted USB device (bnc#1067105).
• CVE-2017-16994: The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel mishandled holes in hugetlb ranges, which allowed local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call (bnc#1069996).
• CVE-2017-17448: net/netfilter/nfnetlink_cthelper.c in the Linux kernel did not require the CAP_NET_ADMIN capability for new, get, and del operations, which allowed local users to bypass intended access restrictions because the nfnl_cthelper_list data structure is shared across all net namespaces (bnc#1071693).
• CVE-2017-17449: The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, did not restrict observations of Netlink messages to a single net namespace, which allowed local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability…

The SUSE Linux Enterprise 12 SP2 Realtime kernel was updated to 4.4.104 to receive various security and bugfixes.

This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032).

• CVE-2017-5753: Local attackers on systems with modern CPUs featuring deep instruction pipelining could use attacker controllable speculative execution over code patterns in the Linux Kernel to leak content from otherwise not readable memory in the same address space, allowing retrieval of passwords, cryptographic keys and other secrets.

  This problem is mitigated by adding speculative fencing on affected code paths throughout the Linux kernel.

• CVE-2017-5715: Local attackers on systems with modern CPUs featuring branch prediction could use mispredicted branches to speculatively execute code patterns that in turn could be made to leak other non-readable content in the same address space, an attack similar to CVE-2017-5753.

  This problem is mitigated by disabling predictive branches, depending on CPU architecture either by firmware updates and/or fixes in the user-kernel privilege boundaries.

  This is done with help of Linux Kernel fixes on the Intel/AMD x86_64 architectures. On x86_64, this requires also updates of the CPU microcode packages, delivered in seperate updates.

  As this feature can have a performance impact, it can be disabled using the 'nospec' kernel commandline option.

• CVE-2017-5754: Local attackers on systems with modern CPUs featuring deep instruction pipelining could use code patterns in userspace to speculative executive code that would read otherwise read protected memory, an attack similar to CVE-2017-5753.

  This problem is mitigated by unmapping the Linux Kernel from the user address space during user code execution, following a approach called 'KAISER'. The terms used here are 'KAISER' / 'Kernel Address Isolation' and 'PTI' / 'Page Table Isolation'.

The following security bugs were fixed:

• CVE-2017-1000405: The Linux Kernel versions had a problematic use of pmd_mkdirty() in the touch_pmd() function inside the THP implementation. touch_pmd() can be reached by get_user_pages(). In such case, the pmd will become dirty. This scenario breaks the new can_follow_write_pmd()'s logic - pmd can become dirty without going through a COW cycle. This bug is not as severe as the original 'Dirty cow' because an ext4 file (or any other regular file) cannot be mapped using THP. Nevertheless, it did allow us to overwrite read-only huge pages. For example, the zero huge page and sealed shmem files can be overwritten (since their mapping can be populated using THP). Note that after the first write page-fault to the zero page, it will be replaced with a new fresh (and zeroed) thp (bnc#1069496).
• CVE-2017-1000410: The Linux kernel was affected by a vulnerability that lies in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. (bnc#1070535).
• CVE-2017-11600: net/xfrm/xfrm_policy.c in the Linux kernel did not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allowed local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message (bnc#1050231).
• CVE-2017-12193: The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel mishandled node splitting, which allowed local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations (bnc#1066192).
• CVE-2017-15115: The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel did not check whether the intended netns is used in a peel-off action, which allowed local users to cause a denial of service (use-after-free and system crash) or…

USN-3617-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS.

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly handle detach events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16646)

Andrey Konovalov discovered that the ASIX Ethernet USB driver in the Linux kernel did not properly handle suspend and resume events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16647)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16649)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

It was discovered that the HugeTLB component of the Linux kernel did not properly handle holes in hugetlb ranges. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16994)

It was discovered that the netfilter component of the Linux did not properly restrict access to the connection tracking helpers list. A local attacker could use this to bypass intended access restrictions. (CVE-2017-17448)

It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform access control checks. A local attacker could improperly modify the system-wide OS fingerprint list. (CVE-2017-17450)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel contained an out-of-bounds read when handling memory-mapped I/O. A local attacker could use this to expose sensitive information. (CVE-2017-17741)

It was discovered that the Salsa20 encryption algorithm implementations in the Linux kernel did not properly handle zero-length inputs. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-17805)

It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17806)

It was discovered that the keyring…

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995)

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that an information disclosure vulnerability existed in the ACPI implementation of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory addresses). (CVE-2017-11472)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

It was discovered that the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel contained a use-after-free when handling device removal. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16528)

Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532)

Andrey Konovalov discovered that the Conexant cx231xx USB video capture driver in the Linux kernel did not properly validate interface descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16536)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly handle detach events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16646)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16649)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

It was discovered that the USB Virtual Host Controller Interface (VHCI) driver in the Linux kernel contained an information disclosure vulnerability. A physically proximate attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16911)

It was discovered that the USB over IP implementation in the Linux kernel did not validate endpoint numbers. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-16912)

It was discovered that the USB over IP implementation in the Linux kernel did not properly validate CMD_SUBMIT packets. A remote attacker could use this to cause a denial of service (excessive memory consumption). (CVE-2017-16913)

It was discovered that the USB over IP implementation in the Linux kernel contained…

USN-3619-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS.

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995)

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that an information disclosure vulnerability existed in the ACPI implementation of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory addresses). (CVE-2017-11472)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

It was discovered that the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel contained a use-after-free when handling device removal. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16528)

Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532)

Andrey Konovalov discovered that the Conexant cx231xx USB video capture driver in the Linux kernel did not properly validate interface descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16536)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly handle detach events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16646)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16649)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

It was discovered that the USB Virtual Host Controller Interface (VHCI) driver in the Linux kernel contained an information disclosure vulnerability. A physically proximate attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16911)

It was discovered that the USB over IP implementation in the Linux kernel did not validate endpoint numbers. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-16912)

It was discovered that the USB over IP implementation in the Linux kernel did not properly validate…

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

It was discovered that the HugeTLB component of the Linux kernel did not properly handle holes in hugetlb ranges. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16994)

It was discovered that the netfilter component of the Linux did not properly restrict access to the connection tracking helpers list. A local attacker could use this to bypass intended access restrictions. (CVE-2017-17448)

It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform access control checks. A local attacker could improperly modify the system-wide OS fingerprint list. (CVE-2017-17450)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel contained an out-of-bounds read when handling memory-mapped I/O. A local attacker could use this to expose sensitive information. (CVE-2017-17741)

It was discovered that the Salsa20 encryption algorithm implementations in the Linux kernel did not properly handle zero-length inputs. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-17805)

It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17806)

It was discovered that the keyring implementation in the Linux kernel did not properly check permissions when a key request was performed on a task's default keyring. A local attacker could use this to add keys to unauthorized keyrings. (CVE-2017-17807)

It was discovered that the Broadcom NetXtremeII ethernet driver in the Linux kernel did not properly validate Generic Segment Offload (GSO) packet sizes. An attacker could use this to cause a denial of service (interface unavailability). (CVE-2018-1000026)

It was discovered that the Reliable Datagram Socket (RDS) implementation in the Linux kernel contained an out-of-bounds write during RDMA page allocation. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5332)

Mohamed Ghannam discovered a null pointer dereference in the RDS (Reliable Datagram Sockets) protocol implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5333)

范龙飞 discovered that a race condition existed in loop block device implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5344)

It was discovered that the Broadcom UniMAC MDIO bus controller driver in the Linux kernel did not properly validate device resources. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-8043)