SB20260425137 - Use-after-free in Linux kernel usb as102 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-31578)

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 use-after-free in the as102_usb driver release path when handling a previously opened device file during device deregistration or disconnect. A local user can open the device node before deregistration and later close the file descriptor to cause a denial of service.

The issue can also result in a double free when the final open file descriptor is released after the device structure was already freed on the probe error path.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/09e9206008b887aa553733bd915d73131071a086
• https://git.kernel.org/stable/c/2eeae47a438694408189138048a786be99954032
• https://git.kernel.org/stable/c/582fbecb3756330006fe1950762412a68c2cacd2
• https://git.kernel.org/stable/c/7e5aedf6059cba2a669d86caeaf5a51f33ec85a1