VULNERABILITY INTELLIGENCE
CVE-2023-4622
CVSS score7.8 HIGH
EPSS probability0.62%
CISA KEVNot currently listed
Published2023-09-06
Last modified2026-09-17
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's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free. We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c (or backported equivalents).
Weakness classification
- cve-coordination@google.com: CWE-416
- nvd@nist.gov: CWE-416
Primary references
- cve-coordination@google.com — Third Party Advisory
- cve-coordination@google.com — Issue Tracking, Mailing List, Patch, Vendor Advisory
- cve-coordination@google.com
- cve-coordination@google.com — Patch, Vendor Advisory
- cve-coordination@google.com — Mailing List, Third Party Advisory
- cve-coordination@google.com — Mailing List, Third Party Advisory
- cve-coordination@google.com — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Mailing List, Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory