SB2026052987 - Use-after-free in Linux kernel qcom iris driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-46210)

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 MBPF checker when processing concurrent instance teardown and core list iteration. A local user can trigger concurrent operations that free fmt_src while it is still referenced from the core list to cause a denial of service.

The issue occurs because instance-specific locking and core list locking protect different scopes, allowing a dangling pointer to be dereferenced during parallel instance handling.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/3d9593ad1a58c5acc3e5fa2a48222bb7632e6812
• https://git.kernel.org/stable/c/494ffd1712a588e590e6b1e9f876a8c8b24a9180