Bug 2540438 (CVE-2026-93790) - CVE-2026-93790 kernel: wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
Summary: CVE-2026-93790 kernel: wifi: iwlwifi: mvm: fix out-of-bounds tid_data access ...
Keywords:
Status: NEW
Alias: CVE-2026-93790
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: 2026-09-24 16:48 UTC by OSIDB Bzimport
Modified: 2026-09-28 11:05 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-09-24 16:48:50 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif

mvmsta->tid_data was indexed by the TFD loop counter 'i' instead of
the actual TID value 'tid'. This writes lq_color into a random tid_data
slot unrelated to the BA entry.
Since multi-TID blockack is not really in use, 'i' was always 0 and no
harm was done.
Add a out-of-bound check before accessing the array.


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