VULNERABILITY INTELLIGENCE
CVE-2023-3389
CVSS score7.8 HIGH
EPSS probability0.67%
CISA KEVNot currently listed
Published2023-06-28
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).
Weakness classification
- CWE-416: Use After Free
Primary references
- cve-coordination@google.com — Third Party Advisory, VDB Entry
- cve-coordination@google.com — Mailing List, Patch
- cve-coordination@google.com — Mailing List, Patch
- cve-coordination@google.com — Mailing List, Patch
- cve-coordination@google.com — Patch
- cve-coordination@google.com — Patch
- cve-coordination@google.com — Patch
- cve-coordination@google.com — Mailing List, Third Party Advisory
- cve-coordination@google.com — Third Party Advisory
- cve-coordination@google.com — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch