Bug 2525410 (CVE-2026-80635) - CVE-2026-80635 kernel: wifi: wcn36xx: fix OOB read from short trigger BA firmware response
Summary: CVE-2026-80635 kernel: wifi: wcn36xx: fix OOB read from short trigger BA firm...
Keywords:
Status: NEW
Alias: CVE-2026-80635
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-28 07:43 UTC by OSIDB Bzimport
Modified: 2026-09-03 15:43 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-08-28 07:43:35 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: wcn36xx: fix OOB read from short trigger BA firmware response

The firmware response length is only checked against sizeof(*rsp) (20
bytes), but when candidate_cnt >= 1, a 22-byte candidate struct is read
at buf + 20 without verifying the response contains it. This causes an
out-of-bounds read of stale heap data, corrupting the BA session state.

Add validation that the response includes the candidate data.


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