Medium 5.5Published May 6, 2026

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

Updated under an hour ago (Oct 28, 2026, 12:00 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential kernel oops when probe fails When probe of the sdio brcmfmac device fails for some reasons (i.e. missing firmware), the sdiodev->bus is set to error instead of NULL, thus the cleanup later in brcmf_sdio_remove() tries to free resources via invalid bus pointer. This happens because sdiodev->bus is set 2 times: first in brcmf_sdio_probe() and second time in brcmf_sdiod_probe(). Fix this by chaning the brcmf_sdio_probe() function to return the error code and set sdio->bus only there.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0ff0843310b74e565901d85f849fb308c3b1f220 before 64ccb0aac41c5055780c2a58bbe2c1b362ceccde; from 0ff0843310b74e565901d85f849fb308c3b1f220 before 379aac7ee8240848aa35f605b06addb4617c863e; from 0ff0843310b74e565901d85f849fb308c3b1f220 before 243307a0d1b0d01538e202c00454c28b21d4432e	CNA record
linux linux_kernel linux:linux_kernel	from 6.13 before 6.18.16; from 6.19 before 6.19.6; 7.0	NVD

References

References

https://git.kernel.org/stable/c/64ccb0aac41c5055780c2a58bbe2c1b362ceccde	patch
https://git.kernel.org/stable/c/379aac7ee8240848aa35f605b06addb4617c863e	patch
https://git.kernel.org/stable/c/243307a0d1b0d01538e202c00454c28b21d4432e	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.