CVE-2022-41222

high

Description

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3

https://bugs.chromium.org/p/project-zero/issues/detail?id=2347

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2

http://packetstormsecurity.com/files/168466/Linux-Stable-5.4-5.10-Use-After-Free-Race-Condition.html

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

https://security.netapp.com/advisory/ntap-20230214-0008/

http://packetstormsecurity.com/files/171005/Kernel-Live-Patch-Security-Notice-LNS-0091-1.html

Details

Source: MITRE

Published: 2022-09-21

Updated: 2023-02-15

Type: CWE-416

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH