Vulnerability · 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.
Published Oct 9, 2022 · catalog updated Oct 14, 2026 · Arch Linux Arch Linux
Check if you run it
No confirmed exploitation is on record for CVE-2022-42703. EPSS is 0.92%. Act only if a listed version of Arch Linux Arch Linux is installed.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium5.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.92%
- Remediation
- Advisory link
- Affected products
- cpe linux/linux kernel
mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe linux/linux kernelversion unspecified
How to fix CVE-2022-42703
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2022-42703. EPSS is 0.92%. Act only if a listed version of Arch Linux Arch Linux is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-416: Use After Free. EPSS 0.92%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 9, 2022 · NIST NVD
Detected
mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
Oct 14, 2026 · NIST NVD
Updated
mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
Sources
- Arch Linux SecurityVendor advisoryCVE-2022-42703
CVE-2022-42703 is named on the public Arch Linux Security page.
security.archlinux.org - CVE.orgVulnerability recordCVE-2022-42703
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2022-42703
30-day exploitation probability 0.9%
first.org - NIST NVDVulnerability recordCVE-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.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.