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-2022-2327

CVE-2022-2327HIGH

Linux Kernel Linux Kernel — Use-after-free in io_uring ad work_flags in Linux Kernel

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0031   21.9     —

AFFECTED
  Product       Versions       Fixed
  Linux Kernel  unspecified –  —

TIMELINE
  Jul 6   Reserved by Google
  Jul 22  Published (CNA: Google)
  Oct 14  RESCORED — CVE-2022-2327 (Linux Kernel). CVSS 7.5 → 7.8 (NVD).

CWE-415, CWE-416 · CNA: Google · CVSS v3.1 · 4 references · NVD status: Modified

Description

io_uring use work_flags to determine which identity need to grab from the calling process to make sure it is consistent with the calling process when executing IORING_OP. Some operations are missing some types, which can lead to incorrect reference counts which can then lead to a double free. We recommend upgrading the kernel past commit df3f3bb5059d20ef094d6b2f0256c4bf4127a859

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 6, 2022	Reserved	Reserved by Google
July 22, 2022	Published	Published (CNA: Google)
October 14, 2026	RESCORED	RESCORED — CVE-2022-2327 (Linux Kernel). CVSS 7.5 → 7.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Linux Kernel	Linux Kernel	—	unspecified	—

Weaknesses

CWE-415 · CWE-416

References (4)

https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=df3f3bb5059d20ef094d6b2f0256c4bf4127a859 [Mailing List, Patch, Vendor Advisory]
https://kernel.dance/#df3f3bb5059d20ef094d6b2f0256c4bf4127a859 [Patch, Third Party Advisory]
https://security.netapp.com/advisory/ntap-20230203-0009/ [Third Party Advisory]

Authoritative record: CVE-2022-2327 at cve.org

Vendors: linux

Weaknesses: CWE-415 · CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-2327 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.