CVE-2026-43144

MEDIUM

wifi: brcmfmac: Fix potential kernel oops when probe fails

Title source: cna
STIX 2.1

Description

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.

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 2.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (10)
Linux/Linux < 6.13
Linux/Linux 0ff0843310b74e565901d85f849fb308c3b1f220 - 243307a0d1b0d01538e202c00454c28b21d4432e
Linux/Linux 0ff0843310b74e565901d85f849fb308c3b1f220 - 379aac7ee8240848aa35f605b06addb4617c863e
Linux/Linux 0ff0843310b74e565901d85f849fb308c3b1f220 - 64ccb0aac41c5055780c2a58bbe2c1b362ceccde
Linux/Linux 6.13
Linux/Linux 6.18.16 - 6.18.*
Linux/Linux 6.19.6 - 6.19.*
Linux/Linux 7.0
linux/linux_kernel 7.0 rc1
linux/linux_kernel 6.13 - 6.18.16
Published May 06, 2026
Tracked Since May 06, 2026