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CVE-2022-42720

HIGH
7.8
CVSS Score
Published: October 13, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 07:16 PM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxFedora

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Severity
HIGH7.8
Exploit prediction
EPSS 0.9%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
10.011.0
Fedora· Fedora Projectrpm
95%
3637
Linux Kernel· Linux
95%
5.1 ≤ v < 5.4.2185.11 ≤ v < 5.15.745.16 ≤ v < 5.19.165.5 ≤ v < 5.10.1486.0 ≤ v < 6.0.2
Affected range stops below 5.10.148, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.74, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.19.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.218, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.0.2, so it looks safe — our inference, not a vendor statement

References (11)

Third Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.html
ExploitMailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/10/13/5
Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.suse.com/show_bug.cgi?id=1204059
Mailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b7808818cb9df6680f98996b8e9a439fa7bcc2f
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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