PT-2022-1380 · Linux+9 · Linux Kernel+9
Soenke Huster
·
Published
2022-10-10
·
Updated
2025-05-15
·
CVE-2022-42720
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions 5.1 through 5.19.x before 5.19.16
Description
The issue is related to refcounting bugs in the multi-BSS handling in the mac80211 stack, which could allow local attackers to trigger use-after-free conditions and potentially execute code by injecting WLAN frames. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
Recommendations
For Linux kernel versions 5.1 through 5.19.x before 5.19.16, update to version 5.19.16 or later to resolve the issue. As a temporary workaround, consider restricting access to the mac80211 stack or disabling the injection of WLAN frames until a patch is available. Avoid using functions in scan.c that may be vulnerable to use-after-free conditions until the issue is resolved.
Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu