Affected: AMD 1st Gen AMD EPYC™ Processors, AMD 2nd Gen AMD EPYC™ Processors, AMD Athlon™ X4 Processor, AMD Ryzen™ Threadripper™ PRO Processor, AMD 2nd Gen AMD Ryzen™ Threadripper™ Processors, AMD 3rd Gen AMD Ryzen™ Threadripper™ Processors, AMD 7th Generation AMD A-Series APUs, AMD Ryzen™ 2000 Series Processors, AMD Ryzen™ 3000 Series Processors, AMD Ryzen™ 4000 Series Processors and 2 more

When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch potentially resulting in information disclosure.

Affected: Ubuntu:22.04:LTS: linux-oem-6.1

It was discovered that the Traffic-Control Index (TCINDEX) implementation 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 execute arbitrary code. (CVE-2023-1281)

It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. (CVE-2022-2196)

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. (CVE-2022-27672)

Gerald Lee discovered that the USB Gadget file system implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-4382)

It was discovered that the NTFS file system implementation in the Linux kernel contained a null pointer dereference in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-4842)

Kyle Zeng discovered that the IPv6 implementation in the Linux kernel contained a NULL pointer dereference vulnerability in certain situations. A local attacker could us…