CVE-2026-98350
Linux: wifi: brcmfmac: cyw: pass PMKID to firmware if present
Linux LinuxOperating systemsCVSS
NoneNot scoredExploitationNo 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 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 6fba6233e9ca7718661e53555a3961c58772c21aLinuxCVE 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: brcmfmac: cyw: pass PMKID to firmware if present
Zero out auth_status on initialization. Otherwise, garbage will leak from the stack to the firmware (when ssid is less than 32 bytes and/or when params->pmkid is set). Then, pass the params->pmkid to the firmware (without it, the firmware caches a garbage PMKID on successful authentication and denies a subsequent association request that includes the PMKID).
Text from CVE List
Affected versions 8
- Linuxaffected: 66f909308a7c05082919ff214a0bbe2a76aa0283 before c2cf589c7d546557ed60c43f2ec014279265dfbfCVE List
- Linuxaffected: 66f909308a7c05082919ff214a0bbe2a76aa0283 before 6fba6233e9ca7718661e53555a3961c58772c21aCVE List
- Linuxaffected: 66f909308a7c05082919ff214a0bbe2a76aa0283 before e2de8d5eb2984416affdd9559e55f37c7f1bbf47CVE List
- Linuxaffected: 6.16CVE List
- Linuxunaffected: all versions before 6.16CVE List
- Linuxunaffected: 6.18.54 through 6.18.*CVE List
- Linuxunaffected: 7.2.8 through 7.2.*CVE List
- Linuxunaffected: 7.3CVE List