CVE-2023-4622

CVSS V2 None CVSS V3 None

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.

Overview

CVE ID
CVE-2023-4622

Assigner
Google

Vulnerability Status
PUBLISHED

Published Version
2023-09-06T13:56:56.355Z

Last Modified Date
2023-09-06T13:56:56.355Z

Weakness Enumerations

CWE	URL
CWE-416	http://cwe.mitre.org/data/definitions/416.html

References

Reference URL	Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y&id=790c2f9d15b594350ae9bca7b236f2b1859de02c	patch
https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c
https://www.debian.org/security/2023/dsa-5492
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2023-4622
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4622

History

Created	Old Value	New Value	Data Type	Notes
2024-06-24 19:43:57				Added to TrackCVE