Red Hat Security Advisory 2020-1070-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass, denial of service, information leakage, integer overflow, and use-after-free vulnerabilities.
6b93e72a941e31a33bc0ed2eb41a6d09d612a0c8a7df6721b2b19e60e9d46f8cRed Hat Security Advisory 2020-1016-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass, denial of service, information leakage, and use-after-free vulnerabilities.
5270d5021355b80a03bef2fa11d11ec5b8ab02fe18ec0a66da959c57bee345f6Ubuntu Security Notice 3632-1 - 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 or possibly execute arbitrary code. 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 in the host OS. Various other issues were also addressed.
f8553fc2b1fbe9a47e2b4b2ce0f11da61f2c04cd45e5a0719d72c05c601fef36Ubuntu Security Notice 3619-2 - 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 kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jann Horn discovered that the Berkeley Packet Filter implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
38b18f0521488f7e9524a5f8e492f7ad41f5c91d876a8aea56b6215d3c63309bUbuntu Security Notice 3620-2 - USN-3620-1 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. Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.
d798485e3bbd4692b62e40f7dd3bc4665b87003190226b4bceb08a4ce5ba5f99Ubuntu Security Notice 3620-1 - It was discovered that the netlink 802.11 configuration interface in the Linux kernel did not properly validate some attributes passed from userspace. A local attacker with the CAP_NET_ADMIN privilege could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a buffer overflow existed in the ioctl handling code in the ISDN subsystem of 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.
5bad86a1b836a836f77b374d0dce05b619b4080fa156e54af36ae9ff36d98185Ubuntu Security Notice 3619-1 - Jann Horn discovered that the Berkeley Packet Filter implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. 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 or possibly execute arbitrary code. Various other issues were also addressed.
c6a6f41fea45fbea18a8b7d6e773995876e32e44e04595bd392e7b20c000dc48Ubuntu Security Notice 3617-3 - 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 or possibly execute arbitrary code. 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 or possibly execute arbitrary code. Various other issues were also addressed.
448337d0f05b0a41584005e6cc61e3ade46f16a30a520f6de2809982cf2960d2Debian Linux Security Advisory 4082-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
347c611935bac535fc1ce2315b4501495b8f7bd67bd16039884f09a909a4602dUbuntu Security Notice 3617-2 - USN-3617-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement 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 or possibly execute arbitrary code. Various other issues were also addressed.
0f276e7a9b2bfbe06e0d855d178a4c603928a7a485688ab62d5262889acef454Ubuntu Security Notice 3617-1 - 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 or possibly execute arbitrary code. 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 in the host OS. Various other issues were also addressed.
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