CVE-2022-42703

medium

Description

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

References

https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b

https://www.cisa.gov/news-events/ics-advisories/icsa-25-105-08

https://github.com/slavin-ayu/Linux-kernel-exploit

https://github.com/Ha0-Y/kernel-exploit-cve

https://github.com/Ha0-Y/LinuxKernelExploits

https://github.com/Squirre17/hbp-attack-demo

https://github.com/pray77/CVE-2023-3640

https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7

https://bugs.chromium.org/p/project-zero/issues/detail?id=2351

Details

Source: Mitre, NVD

Published: 2022-10-09

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.6

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

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

EPSS

EPSS: 0.00602