All vulnerabilities
CVE-2026-98828

Linux: wifi: ath9k: reject short WMI command responses

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in03ef61d05aa26022327f971b790f07e6bf6e35d6Also 93ce8ea70451e800601bc9444aa33043de15d67bCVE List
Published18 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 03ef61d05aa26022327f971b790f07e6bf6e35d6LinuxCVE List
  • 93ce8ea70451e800601bc9444aa33043de15d67bLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 10

  • Linuxaffected: fb9987d0f748c983bb795a86f47522313f701a08 before 03ef61d05aa26022327f971b790f07e6bf6e35d6CVE List
  • Linuxaffected: fb9987d0f748c983bb795a86f47522313f701a08 before e0c21130c1c7791ba73b19a3a9ea767c8cd43745CVE List
  • Linuxaffected: fb9987d0f748c983bb795a86f47522313f701a08 before a3b0137c855a61371d9cf9993b8bcc33c9798202CVE List
  • Linuxaffected: fb9987d0f748c983bb795a86f47522313f701a08 before 93ce8ea70451e800601bc9444aa33043de15d67bCVE List
  • Linuxaffected: 2.6.35CVE List
  • Linuxunaffected: all versions before 2.6.35CVE List
  • Linuxunaffected: 6.12.113 through 6.12.*CVE List
  • Linuxunaffected: 6.18.56 through 6.18.*CVE List
  • Linuxunaffected: 7.2.10 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 4