Bug 2540405 (CVE-2026-93789) - CVE-2026-93789 kernel: wifi: iwlwifi: bound aligned TLV advance in FW parser
Summary: CVE-2026-93789 kernel: wifi: iwlwifi: bound aligned TLV advance in FW parser
Keywords:
Status: NEW
Alias: CVE-2026-93789
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 16:42 UTC by OSIDB Bzimport
Modified: 2026-09-28 10:58 UTC (History)
17 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-24 16:42:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: bound aligned TLV advance in FW parser

Validate ALIGN(tlv_len, 4) against remaining parser length before
consuming bytes from the firmware image.

This avoids length underflow on malformed TLVs.
Comment 1 Mauro Matteo Cascella 2026-09-28 10:53:56 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93789.mbox
Note You need to log in before you can comment on or make changes to this bug.