VULNERABILITY INTELLIGENCE
CVE-2023-1872
CVSS score7.8 HIGH
EPSS probability0.31%
CISA KEVNot currently listed
Published2023-04-12
Last modified2026-06-17
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 system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
Weakness classification
- cve-coordination@google.com: CWE-416
- nvd@nist.gov: CWE-416
Primary references
- cve-coordination@google.com — Third Party Advisory, VDB Entry
- cve-coordination@google.com — Mailing List, Product
- cve-coordination@google.com — Mailing List, Patch
- 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, Product
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory