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CVE-2022-21125

Status Candidate

Overview

Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Related Files

Ubuntu Security Notice USN-5485-2
Posted Jul 4, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5485-2 - 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. 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. 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.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2022-21123, CVE-2022-21125, CVE-2022-21166
SHA-256 | 06d422dc8a4dfc17f18d1b50b015d7dc501edc86fbfb85076e004602dbe8d1be
Ubuntu Security Notice USN-5485-1
Posted Jun 20, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5485-1 - 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. 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. 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.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2022-21123, CVE-2022-21125, CVE-2022-21166
SHA-256 | 712ea0fa8cca54c56dcdee1163b6c9f9af4877ee2b821344703659e1956a2b24
Ubuntu Security Notice USN-5484-1
Posted Jun 20, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5484-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. It was discovered that a race condition existed in the network scheduling subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-39713, CVE-2022-21123, CVE-2022-21125, CVE-2022-21166, CVE-2022-21499
SHA-256 | 6ec0ae0395c19c7e5a1cccd288c838331c898658993f20553714a1b880f284f3
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