CVE-2026-80949 in Linux

Summary

by MITRE • 09/11/2026

In the Linux kernel, the following vulnerability has been resolved:

wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control()

The memory allocated for buf is not freed in some of the error paths in brcmf_sdio_read_control(). Fix that by adding vfree() calls.

[arend: rework as suggested by Johannes]

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

• Responsible: Linux
• Reservation: 08/26/2026
• Disclosure: 09/11/2026
• Moderation: accepted
• Entry: VDB-402663
• CPE: ready
• CWE: CWE-401 (confirmed)
• CVSS: 10.0 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Chemical, Government, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-80949
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-80949
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-80949/