CVE-2026-80944 Linux Kernel mwifiex - Denial of Service

Linux kernel mwifiex driver contains a stack corruption vulnerability caused by late firmware responses writing through stale stack-backed data buffers after interrupted wait_event_interruptible_timeout calls, letting attackers cause kernel panic and memory corruption, exploit requires repeated association/disassociation cycles.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the Linux kernel version containing the fix for mwifiex driver stack corruption issue or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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