CVE-2026-99100 wifi: p54: validate firmware record lengths
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-99100?
CVE-2026-99100 is a vulnerability in Linux, published on 28 Oct 2026.
Official description
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.
Which versions are affected by CVE-2026-99100?
How do I fix CVE-2026-99100?
Upgrade to a fixed version.
Is CVE-2026-99100 being exploited?
There is no known exploitation of CVE-2026-99100 in the wild and no public exploit code.
Sources
Also known as AZL-111164, BELL-CVE-2026-99100, DEBIAN-CVE-2026-99100, GHSA-m5mp-q9hj-5q22, UBUNTU-CVE-2026-99100.