Red Hat Security Advisory 2018-3822-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an use-after-free vulnerability.
2c75e8a0c4daa00265bfac5900dda74d873669e6e611b64f788b2b86a15f96e7Linux kernel versions prior to 4.11.8 suffer from an mq_notify: double sock_put() local privilege escalation vulnerability.
d856e8f0e3a24bb6da7c039ea069a1db6509879ee46ac5e3dae61b153c2d7369Red Hat Security Advisory 2018-0169-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: An integer overflow vulnerability in ip6_find_1stfragopt() function was found. A local attacker that has privileges to open raw socket can cause an infinite loop inside the ip6_find_1stfragopt() function. The IPv6 fragmentation implementation in the Linux kernel does not consider that the nexthdr field may be associated with an invalid option, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted socket and send system calls. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.
de0f21229493fa8c3509fee125cf89eb50cdc8abe4cae7e257c91283219f65baUbuntu Security Notice 3470-2 - USN-3470-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build function in the Linux kernel. A local attacker could use to cause a denial of service or possibly execute arbitrary code with administrative privileges. Various other issues were also addressed.
45cdfddce64c932d022da74ac84e9b861d656767a40b616a21399ad5537f8eddUbuntu Security Notice 3468-2 - USN-3468-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
47d0cfd351854611999665f04a62bff5bebaaf70ccb7778a12e28834ed22be13Ubuntu Security Notice 3468-1 - It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
4351d0ac9d461f5f4d4e71ae65bcadc5bdb1901c5bd483b113516c2bb33b787aUbuntu Security Notice 3470-1 - Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build function in the Linux kernel. A local attacker could use to cause a denial of service or possibly execute arbitrary code with administrative privileges. Dmitry Vyukov discovered that a race condition existed in the timerfd subsystem of the Linux kernel when handling might_cancel queuing. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
79802aa159a36b07a77681f62d34e9d9160b1f7e1046cae1a8af43715e35697bUbuntu Security Notice 3468-3 - It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
b0c7e1f5657c8f1a680373d7595b40ecf55695e2aab91e40342187daa8027ff6Red Hat Security Advisory 2017-2931-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.
edba1cdf75883b0afd4147a1b9b0f8c787387b79a168379d1cee80de73ebe1eaRed Hat Security Advisory 2017-2930-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.
e290a5f1dc4b6935b2c09d9c88039750f701a314dff84bdf0a026e7c338e354dRed Hat Security Advisory 2017-2918-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.
668de5ec7c2ffb14d70f655cc1fae90c9916874f80e9a59e8ec1cecdaf1fa43bUbuntu Security Notice 3405-2 - USN-3405-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
9fb7e5e4b1090eb89ab9343b4aac56e8f9b44171aade9cf1e7eb6e419ed30450Ubuntu Security Notice 3405-1 - It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Huang Weller discovered that the ext4 filesystem implementation in the Linux kernel mishandled a needs-flushing-before-commit list. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
e985c878ac1f840112d8ae173a55521c302cdeedb1d58e78149cb339271b8e3aDebian Linux Security Advisory 3927-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
9f9c5bb5b6146a8be5b426602758bdbc89de02e6443b2d13e49692986ac5645e
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