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CVE-2022-39188

Public on 2022-09-02
Modified on 2024-03-01
Description

An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.

Severity
Medium
See what this means
CVSS v3 Base Score
4.7
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2022-09-30 02:41 ALAS-2022-1636
Amazon Linux 2 - Core kernel 2022-09-30 07:04 ALAS2-2022-1852
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-09-30 07:10 ALAS2KERNEL-5.10-2022-020
Amazon Linux 2 - Kernel-5.15 Extra kernel 2022-09-30 07:10 ALAS2KERNEL-5.15-2022-008
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-09-30 07:10 ALAS2KERNEL-5.4-2022-036
Amazon Linux 2023 kernel 2023-02-17 20:46 ALAS2023-2023-070

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv3 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H