CVE-2018-7480

The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure.

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.156 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-16597: Incorrect access checking in overlayfs mounts could have been used by local attackers to modify or truncate files in the underlying filesystem (bnc#1106512).
• CVE-2018-14613: Prevent invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, caused by a lack of block group item validation in check_leaf_item (bsc#1102896)
• CVE-2018-14617: Prevent NULL pointer dereference and panic in hfsplus_lookup() when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bsc#1102870)
• CVE-2018-16276: Incorrect bounds checking in the yurex USB driver in yurex_read allowed local attackers to use user access read/writes to crash the kernel or potentially escalate privileges (bsc#1106095)
• CVE-2018-7757: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c allowed local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file (bnc#1084536)
• CVE-2018-7480: The blkcg_init_queue function allowed local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure (bsc#1082863).
• CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).

The following non-security bugs were fixed:

• asm/sections: add helpers to check for section data (bsc#1063026).
• ASoC: wm8994: Fix missing break in switch (bnc#1012382).
• block: bvec_nr_vecs() returns value for wrong slab (bsc#1082979).
• bpf: fix overflow in prog accounting (bsc#1012382).
• btrfs: Add checker for EXTENT_CSUM (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Add sanity check for EXTENT_DATA when reading out leaf (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Check if item pointer overlaps with the item itself (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Check that each block group has corresponding chunk at mount time (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Introduce mount time chunk <-> dev extent mapping check (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Move leaf and node validation checker to tree-checker.c (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized (bnc#1012382).
• btrfs: replace: Reset on-disk dev stats value after replace (bnc#1012382).
• btrfs: scrub: Do not use inode page cache in scrub_handle_errored_block() (bsc#1108096).
• btrfs: tree-checker: Add checker for dir item (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Detect invalid and empty essential trees (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance btrfs_check_node output (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance output for btrfs_check_leaf (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance output for check_csum_item (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance output for check_extent_data_item (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Fix false panic for sanity test…

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.156 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-16597: Incorrect access checking in overlayfs mounts could have been used by local attackers to modify or truncate files in the underlying filesystem (bnc#1106512).
• CVE-2018-14613: Prevent invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, caused by a lack of block group item validation in check_leaf_item (bsc#1102896)
• CVE-2018-14617: Prevent NULL pointer dereference and panic in hfsplus_lookup() when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bsc#1102870)
• CVE-2018-16276: Incorrect bounds checking in the yurex USB driver in yurex_read allowed local attackers to use user access read/writes to crash the kernel or potentially escalate privileges (bsc#1106095)
• CVE-2018-7757: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c allowed local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file (bnc#1084536)
• CVE-2018-7480: The blkcg_init_queue function allowed local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure (bsc#1082863).
• CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).

The following non-security bugs were fixed:

• asm/sections: add helpers to check for section data (bsc#1063026).
• ASoC: wm8994: Fix missing break in switch (bnc#1012382).
• block: bvec_nr_vecs() returns value for wrong slab (bsc#1082979).
• bpf: fix overflow in prog accounting (bsc#1012382).
• btrfs: Add checker for EXTENT_CSUM (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Add sanity check for EXTENT_DATA when reading out leaf (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Check if item pointer overlaps with the item itself (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Check that each block group has corresponding chunk at mount time (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Introduce mount time chunk <-> dev extent mapping check (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: Move leaf and node validation checker to tree-checker.c (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized (bnc#1012382).
• btrfs: replace: Reset on-disk dev stats value after replace (bnc#1012382).
• btrfs: scrub: Do not use inode page cache in scrub_handle_errored_block() (bsc#1108096).
• btrfs: tree-checker: Add checker for dir item (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Detect invalid and empty essential trees (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance btrfs_check_node output (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance output for btrfs_check_leaf (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance output for check_csum_item (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Enhance output for check_extent_data_item (bsc#1102882, bsc#1102896, bsc#1102879, bsc#1102877, bsc#1102875,).
• btrfs: tree-checker: Fix false panic for sanity test…

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

• CVE-2018-10853: A flaw was found in the way the KVM hypervisor emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest (bnc#1097104).
• CVE-2018-10876: A flaw was found in Linux kernel in the ext4 filesystem code. A use-after-free is possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image. (bnc#1099811)
• CVE-2018-10877: Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image. (bnc#1099846)
• CVE-2018-10878: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write and a denial of service or unspecified other impact is possible by mounting and operating a crafted ext4 filesystem image. (bnc#1099813)
• CVE-2018-10879: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact may occur by renaming a file in a crafted ext4 filesystem image. (bnc#1099844)
• CVE-2018-10880: Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could use this to cause a system crash and a denial of service. (bnc#1099845)
• CVE-2018-10881: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound access in ext4_get_group_info function, a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image. (bnc#1099864)
• CVE-2018-10882: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound write in in fs/jbd2/transaction.c code, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image. (bnc#1099849)
• CVE-2018-10883: A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image. (bnc#1099863)
• CVE-2018-10902: It was found that the raw midi kernel driver did not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status() which are part of snd_rawmidi_ioctl() handler in rawmidi.c file. A malicious local attacker could possibly use this for privilege escalation (bnc#1105322).
• CVE-2018-10938: A crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system before an attacker could leverage this flaw (bnc#1106016).
• CVE-2018-10940: The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c allowed local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory (bnc#1092903).
• CVE-2018-12896: An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922).
• CVE-2018-13093: There is a NULL…

The SUSE Linux Enterprise 12 SP3 RT kernel was updated to 4.4.162 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-7480: The blkcg_init_queue function in block/blk-cgroup.c allowed local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure (bnc#1082863).
• CVE-2018-7757: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c allowed local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file (bnc#1084536).
• CVE-2018-14613: There is an invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item validation in check_leaf_item in fs/btrfs/tree-checker.c (bnc#1102896).
• CVE-2018-14617: There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bnc#1102870).
• CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. (bnc#1107829).
• CVE-2018-16276: Local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges (bnc#1106095).
• CVE-2018-16597: Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem (bnc#1106512).
• CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).
• CVE-2018-18386: drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bnc#1094825).
• CVE-2018-9516: A lack of certain checks in the hid_debug_events_read() function in the drivers/hid/hid-debug.c file might have resulted in receiving userspace buffer overflow and an out-of-bounds write or to the infinite loop. (bnc#1108498).

The following non-security bugs were fixed:

• 6lowpan: iphc: reset mac_header after decompress to fix panic (bnc#1012382).
• alsa: bebob: use address returned by kmalloc() instead of kernel stack for streaming DMA mapping (bnc#1012382).
• alsa: emu10k1: fix possible info leak to userspace on SNDRV_EMU10K1_IOCTL_INFO (bnc#1012382).
• alsa: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge (bnc#1012382).
• alsa: hda - Fix cancel_work_sync() stall from jackpoll work (bnc#1012382).
• alsa: hda/realtek - Cannot adjust speaker's volume on Dell XPS 27 7760 (bnc#1012382).
• alsa: msnd: Fix the default sample sizes (bnc#1012382).
• alsa: pcm: Fix snd_interval_refine first/last with open min/max (bnc#1012382).
• alsa: usb-audio: Fix multiple definitions in AU0828_DEVICE() macro (bnc#1012382).
• apparmor: remove no-op permission check in policy_unpack (git-fixes).
• arc: build: Get rid of…

The SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.162 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2018-18281: The mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. (bnc#1113769).
• CVE-2018-18710: An information leak in cdrom_ioctl_select_disc in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940 and CVE-2018-16658 (bnc#1113751).
• CVE-2018-18690: A local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandled ATTR_REPLACE operations with conversion of an attr from short to long form (bnc#1105025).
• CVE-2018-18386: drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bnc#1094825).
• CVE-2018-9516: In hid_debug_events_read of drivers/hid/hid-debug.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. (bnc#1108498).
• CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. (bnc#1107829).
• CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).
• CVE-2018-16597: Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem (bnc#1106512).
• CVE-2018-14613: There is an invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item validation in check_leaf_item in fs/btrfs/tree-checker.c (bnc#1102896).
• CVE-2018-14617: There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bnc#1102870).
• CVE-2018-16276: Local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges (bnc#1106095 bnc#1115593).
• CVE-2018-7757: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c allowed local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file (bnc#1087209). -…

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2018-3639)

Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17975)

It was discovered that a race condition existed in the F2FS implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18193)

It was discovered that a buffer overflow existed in the Hisilicon HNS Ethernet Device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-18222)

It was discovered that the netfilter subsystem in the Linux kernel did not validate that rules containing jumps contained user-defined chains. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1065)

It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1068)

It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1130)

It was discovered that the SCTP Protocol implementation in the Linux kernel did not properly validate userspace provided payload lengths in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5803)

It was discovered that a double free error existed in the block layer subsystem of the Linux kernel when setting up a request queue. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-7480)

It was discovered that a memory leak existed in the SAS driver subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2018-7757)

It was discovered that a race condition existed in the x86 machine check handler in the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-7995)

Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code. (CVE-2018-8781)

Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822)

USN-3654-1 fixed vulnerabilities and added mitigations 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 and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2018-3639)

Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17975)

It was discovered that a race condition existed in the F2FS implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18193)

It was discovered that a buffer overflow existed in the Hisilicon HNS Ethernet Device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-18222)

It was discovered that the netfilter subsystem in the Linux kernel did not validate that rules containing jumps contained user-defined chains. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1065)

It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1068)

It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1130)

It was discovered that the SCTP Protocol implementation in the Linux kernel did not properly validate userspace provided payload lengths in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5803)

It was discovered that a double free error existed in the block layer subsystem of the Linux kernel when setting up a request queue. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-7480)

It was discovered that a memory leak existed in the SAS driver subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2018-7757)

It was discovered that a race condition existed in the x86 machine check handler in the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-7995)

Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code. (CVE-2018-8781)

Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822)

Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17975)

It was discovered that a race condition existed in the F2FS implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18193)

It was discovered that a buffer overflow existed in the Hisilicon HNS Ethernet Device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-18222)

It was discovered that the netfilter subsystem in the Linux kernel did not validate that rules containing jumps contained user-defined chains. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1065)

It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1068)

It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1130)

It was discovered that the SCTP Protocol implementation in the Linux kernel did not properly validate userspace provided payload lengths in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5803)

It was discovered that a double free error existed in the block layer subsystem of the Linux kernel when setting up a request queue. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-7480)

It was discovered that a memory leak existed in the SAS driver subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2018-7757)

It was discovered that a race condition existed in the x86 machine check handler in the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-7995)

Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code. (CVE-2018-8781)

Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822)