Bug 2562569 (CVE-2026-99100) - CVE-2026-99100 kernel: wifi: p54: validate firmware record lengths
Summary: CVE-2026-99100 kernel: wifi: p54: validate firmware record lengths
Keywords:
Status: NEW
Alias: CVE-2026-99100
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: 2026-10-28 04:01 UTC by OSIDB Bzimport
Modified: 2026-10-28 10:57 UTC (History)
17 users (show)

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


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Description OSIDB Bzimport 2026-10-28 04:01:38 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: p54: validate firmware record lengths

The p54 firmware parser accesses component ID and component version
records without checking that their lengths cover the fields being read.
A malformed record can therefore make the parser read past the record.

Validate the component ID and component version record lengths before
accessing their data. The descriptor record is also checked against the
shortest descriptor length found in the supported firmware images.

Reject descriptor values that underflow the RX offset or produce an empty
RX range before updating the driver state.


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