CVE-2022-42720

HIGH

Linux Kernel 5.1-5.19.x - Use-After-Free in mac80211 Multi-BSS Handling

Title source: llm
STIX 2.1

Description

Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentially execute code.

References (10)

Core 10
Core References
Exploit, Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/10/13/5
Issue Tracking, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1204059
Third Party Advisory vendor-advisory
https://www.debian.org/security/2022/dsa-5257
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

Scores

CVSS v3 7.8
EPSS 0.0073
EPSS Percentile 72.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (5)
debian/debian_linux 10.0
debian/debian_linux 11.0
fedoraproject/fedora 36
fedoraproject/fedora 37
linux/linux_kernel 5.1 - 5.4.218
Published Oct 14, 2022
Tracked Since Feb 18, 2026