Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2022-42703

CVE-2022-42703MEDIUM

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

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0092   59.6     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Oct 9   Reserved by mitre
  Oct 9   Published (CNA: mitre)
  Oct 14  ENRICHED — CVE-2022-42703. Received CVSS 5.5 and CPE data from NVD.
  Oct 14  EXPLOIT PUBLISHED — CVE-2022-42703. Public exploit reference added.

CWE-416 · CNA: mitre · CVSS v3.1 · 7 references · NVD status: Modified

Description

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

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
October 9, 2022	Reserved	Reserved by mitre
October 9, 2022	Published	Published (CNA: mitre)
October 14, 2026	ENRICHED	ENRICHED — CVE-2022-42703. Received CVSS 5.5 and CPE data from NVD.
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2022-42703. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-416

References (7)

https://bugs.chromium.org/p/project-zero/issues/detail?id=2351 [Exploit, Mailing List, Third Party Advisory]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7 [Mailing List, Patch, Vendor Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://cert-portal.siemens.com/productcert/html/ssa-831302.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b [Mailing List, Patch, Vendor Advisory]
https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b [Patch, Third Party Advisory]
https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html [Exploit, Technical Description, Third Party Advisory]

Authoritative record: CVE-2022-42703 at cve.org

Weaknesses: CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-42703 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.