CVE-2022-42703
MEDIUMCVSS 5.5/10EPSS 0.97%
Last modified
CVE-2022-42703 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.. EPSS estimates a 0.97% chance of exploitation in the next 30 days.
Description
mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.19.7 |
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2351Exploit, Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542bMailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542bPatch, Third Party Advisory
- https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.htmlExploit, Technical Description, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2351Exploit, Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542bMailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542bPatch, Third Party Advisory
- https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.htmlExploit, Technical Description, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2022-42703?
CVE-2022-42703 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.
How do I fix CVE-2022-42703?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2022-42703?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST