CVEvulnerability

CVE-2023-4622

7.0 HIGH Published 2023-09-06 Modified 2026-09-17 Official page ↗
Status
Modified
Published
2023-09-06
Last modified
2026-09-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416

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).

Affected configurations

• linux linux kernel (>= 4.2 < 4.14.324) • linux linux kernel (>= 4.15 < 4.19.293) • linux linux kernel (>= 4.20 < 5.4.255) • linux linux kernel (>= 5.5 < 5.10.192) • linux linux kernel (>= 5.11 < 5.15.128) • linux linux kernel (>= 5.16 < 6.1.47) • linux linux kernel (>= 6.2 < 6.4.12) • debian debian linux 10.0 • debian debian linux 12.0

Related

Weakness · CWE (1)

References