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VulnerabilityPublished Updated

CVE-2026-43144: Linux kernel · wifi: brcmfmac: Fix potential kernel oops when probe fails

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 11 Nov 2026, 22:48 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

AI-suggested

A fix has been implemented in the Linux kernel to correct the error handling in the brcmfmac driver probe function. Users should apply the official kernel updates containing this fix once available. No additional mitigation is indicated.

Description

A vulnerability in the Linux kernel's brcmfmac Wi-Fi driver could cause a kernel oops (crash) when the probe of the sdio brcmfmac device fails, such as due to missing firmware. This occurs because an invalid bus pointer is used during cleanup, leading to improper resource freeing. The issue has been fixed by correcting the error handling in the probe function to properly set the bus pointer and return error codes.

References

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