CVE-2022-42720

Public Exploit

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.20%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.suse.com/show_bug.cgi?id=1204059 issue tracking third party advisory patch
http://www.openwall.com/lists/oss-security/2022/10/13/5 mailing list exploit third party advisory
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b7808818cb9df6680f98996b8e9a439fa7bcc2f mailing list patch vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/ vendor advisory
https://www.debian.org/security/2022/dsa-5257 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html third party advisory mailing list
http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.html vdb entry third party advisory
https://security.netapp.com/advisory/ntap-20230203-0008/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-42720?
CVE-2022-42720 has been scored as a high severity vulnerability.
How to fix CVE-2022-42720?
To fix CVE-2022-42720, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-42720 being actively exploited in the wild?
It is possible that CVE-2022-42720 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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