Unknown severity · Source severity not reportedCVE-2026-98828

wifi: ath9k: reject short WMI command responsesCVE-2026-98828

Answer in brief

CVE-2026-98828 records a Unknown severity vulnerability in wifi: ath9k: reject short WMI command responses. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 18, 2026Updated Oct 18, 2026Source checked Oct 18, 2026First seen by HOL Oct 18, 2026Material review Oct 18, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=fb9987d0f748c983bb795a86f47522313f701a08 <03ef61d05aa26022327f971b790f07e6bf6e35d6 \|\| >=fb9987d0f748c983bb795a86f47522313f701a08 <e0c21130c1c7791ba73b19a3a9ea767c8cd43745 \|\| >=fb9987d0f748c983bb795a86f47522313f701a08 <a3b0137c855a61371d9cf9993b8bcc33c9798202 \|\| >=fb9987d0f748c983bb795a86f47522313f701a08 <93ce8ea70451e800601bc9444aa33043de15d67b	03ef61d05aa26022327f971b790f07e6bf6e35d6, e0c21130c1c7791ba73b19a3a9ea767c8cd43745, a3b0137c855a61371d9cf9993b8bcc33c9798202, 93ce8ea70451e800601bc9444aa33043de15d67b
Linux/Linuxgeneric	2.6.35	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 03ef61d05aa26022327f971b790f07e6bf6e35d6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 18, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.