CVE-2026-98828wifi: ath9k: reject short WMI command responses
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: reject short WMI command responses ath9k_wmi_rsp_callback() removes the validated WMI header and copies the number of bytes expected by the waiting command into its response buffer. A device response shorter than that expectation can therefore be read beyond the skb payload. Record -EMSGSIZE for a short response, complete the waiter, and return the stored status from the command path. This also prevents callers from consuming stale response bytes as a successful reply.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from fb9987d0f748c983bb795a86f47522313f701a08 before 03ef61d05aa26022327f971b790f07e6bf6e35d6; from fb9987d0f748c983bb795a86f47522313f701a08 before e0c21130c1c7791ba73b19a3a9ea767c8cd43745; from fb9987d0f748c983bb795a86f47522313f701a08 before a3b0137c855a61371d9cf9993b8bcc33c9798202; from fb9987d0f748c983bb795a86f47522313f701a08 before 93ce8ea70451e800601bc9444aa33043de15d67b | CNA record |
References
- https://git.kernel.org/stable/c/03ef61d05aa26022327f971b790f07e6bf6e35d6
- https://git.kernel.org/stable/c/e0c21130c1c7791ba73b19a3a9ea767c8cd43745
- https://git.kernel.org/stable/c/a3b0137c855a61371d9cf9993b8bcc33c9798202
- https://git.kernel.org/stable/c/93ce8ea70451e800601bc9444aa33043de15d67b
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.