CVE-2022-42720

Advisory lineage Upstream: 0 Downstream: 34
Modified
Published: 13 Oct 2022, 00:00
Last modified:15 May 2025, 20:47

Vulnerability Summary

Overall Risk (default)
medium
41/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.73% LOW
1% probability +0.08%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

13 Oct 2022, 00:00
Published
Vulnerability first disclosed
15 May 2025, 20:47
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.73%• Percentile: 73%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    10.0 | 11.0

  • fedoraproject•fedora

    36 | 37

  • linux•linux_kernel

    ≥ 5.1, < 5.4.218 | ≥ 5.5, < 5.10.148 | ≥ 5.11, < 5.15.74 | ≥ 5.16, < 5.19.16 | ≥ 6.0, < 6.0.2

References (10)