Bug 2546492 (CVE-2026-98350) - CVE-2026-98350 kernel: wifi: brcmfmac: cyw: pass PMKID to firmware if present
Summary: CVE-2026-98350 kernel: wifi: brcmfmac: cyw: pass PMKID to firmware if present
Keywords:
Status: NEW
Alias: CVE-2026-98350
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-06 09:31 UTC by OSIDB Bzimport
Modified: 2026-10-10 14:39 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-06 09:31:57 UTC 
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).
Comment 1 gkamathe 2026-10-10 14:31:17 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98350.mbox
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