Bug 2540514 (CVE-2026-93793) - CVE-2026-93793 kernel: wifi: iwlwifi: mvm: validate TX_CMD response layout
Summary: CVE-2026-93793 kernel: wifi: iwlwifi: mvm: validate TX_CMD response layout
Keywords:
Status: NEW
Alias: CVE-2026-93793
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 17:05 UTC by OSIDB Bzimport
Modified: 2026-09-28 11:24 UTC (History)
17 users (show)

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


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Description OSIDB Bzimport 2026-09-24 17:05:04 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: mvm: validate TX_CMD response layout

TX_CMD parsing uses frame_count to walk status entries and then
read the trailing SCD SSN. Make the minimum-length check follow
that exact runtime layout calculation before parsing the payload.

For new TX API, reject TX_CMD responses with frame_count != 1 and
warn/return in the aggregation handler to document that aggregated
accounting is expected via BA notifications.


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