CVE-2026-43144

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0ff0843310b74e565901d85f849fb308c3b1f220 < 64ccb0aac41c5055780c2a58bbe2c1b362ceccdeaffected
LinuxLinux0ff0843310b74e565901d85f849fb308c3b1f220 < 379aac7ee8240848aa35f605b06addb4617c863eaffected
LinuxLinux0ff0843310b74e565901d85f849fb308c3b1f220 < 243307a0d1b0d01538e202c00454c28b21d4432eaffected
LinuxLinux6.13affected
LinuxLinux0 < 6.13unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References