CVE-2022-39188

medium

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.

References

https://www.debian.org/security/2022/dsa-5257

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html

https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15

https://bugs.chromium.org/p/project-zero/issues/detail?id=2329

https://www.cisa.gov/news-events/ics-advisories/icsa-25-044-09

https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19

Details

Source: Mitre, NVD

Published: 2022-09-02

Updated: 2023-11-07

Risk Information

CVSS v2

Base Score: 3.8

Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:N/A:C

Severity: Low

CVSS v3

Base Score: 4.7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.0002