CVE-2022-42720
HIGH 7.8EPSS 0.9%
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 v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.90% chance of exploitation in the next 30 days, 59th percentile
- Published
- 2022-10-13
- Updated
- 2026-10-14
Proof-of-concept exploits (5)
- http://www.openwall.com/lists/oss-security/2022/10/13/5
- c0ld21/linux_kernel_ndays1★ · 2023-03-20
- c0ld21/ndays1★ · 2023-03-20
- PurpleVsGreen/beacown131★ · 2022-10-27
- fstmpr/linux_kernel_ndays1★ · 2023-03-20
Security advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b780881…
- http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1…
- https://bugzilla.suse.com/show_bug.cgi?id=1204059
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://security.netapp.com/advisory/ntap-20230203-0008
- https://www.debian.org/security/2022/dsa-5257