SB2026062545 - Use-after-free in Linux kernel linux fsl

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-53115)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the fsl-mc bus driver_override handling when matching drivers during device probing. A local user can trigger driver matching on a device with a stale driver_override reference to cause a denial of service.

The issue occurs because the match callback may access driver_override without the device lock held during __driver_attach().

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/4911b836f35c034c36f102db4ecbe339b38e7d1d
• https://git.kernel.org/stable/c/60bfb563a399c4597dc80588a1109758a8908b97
• https://git.kernel.org/stable/c/6c8dfb0362732bf1e4829867a2a5239fedc592d0
• https://git.kernel.org/stable/c/8139ce66b52a4a5638bfb445b037c07d4abeb08e