Bug 2540505 (CVE-2026-93791) - CVE-2026-93791 kernel: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware
Summary: CVE-2026-93791 kernel: wifi: iwlwifi: mvm: add a check on the tid coming from...
Keywords:
Status: NEW
Alias: CVE-2026-93791
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 17:03 UTC by OSIDB Bzimport
Modified: 2026-09-28 11:12 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-24 17:03:21 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: mvm: add a check on the tid coming from the firmware

ba_notif->tid is a firmware-controlled u8 that is used directly
as an array index into tid_data[] without any validation. Add a
bounds check against IWL_MAX_TID_COUNT before dereferencing the
array.
Comment 1 Mauro Matteo Cascella 2026-09-28 11:07:45 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93791.mbox
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