USN-5485-2: Linux kernel (OEM) vulnerabilities

Related Vulnerabilities: CVE-2022-21123   CVE-2022-21125   CVE-2022-21166  

Several security issues were mitigated in the Linux kernel.

It was discovered that some Intel processors did not properly perform cleanup during specific special register write operations. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21166) After a standard system update you need to reboot your computer to make all the necessary changes.

Details

It was discovered that some Intel processors did not completely perform
cleanup actions on multi-core shared buffers. A local attacker could
possibly use this to expose sensitive information. (CVE-2022-21123)

It was discovered that some Intel processors did not completely perform
cleanup actions on microarchitectural fill buffers. A local attacker could
possibly use this to expose sensitive information. (CVE-2022-21125)

It was discovered that some Intel processors did not properly perform
cleanup during specific special register write operations. A local attacker
could possibly use this to expose sensitive information. (CVE-2022-21166)