Use After Free in Linux Kernel
CVE-2022-42720
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.
Vulnerability class: Use-After-Free
EPSS: 0.008 (53.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- Debian Debian_linux — versions 10.0, 11.0
- Fedoraproject Fedora — versions 36, 37
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (Exploit, Mailing List, Third Party Advisory)
- cve@mitre.org (Patch, Mailing List, Vendor Advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-42720?
- CVE-2022-42720 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2022-10-14.
- How severe is CVE-2022-42720?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-42720 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.