CVE-2022-42703

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

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.92% chance of exploitation in the next 30 days, 60th percentile

Published

2022-10-09

Updated

2026-10-14

Proof-of-concept exploits (3)

• https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-th…
• Satheesh575555/linux-4.1.15_CVE-2022-427030★ · 2023-10-06
• Squirre17/hbp-attack-demo4★ · 2023-07-02

Security advisories

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df8…
• https://bugs.chromium.org/p/project-zero/issues/detail?id=2351
• torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b

References

• CVE Record
• NVD entry

Related

• CVE-2019-17621
• CVE-2019-8985
• CVE-2021-4034