SB20260925104 - Improper control of a resource through its lifetime in Linux kernel events intel

Description

This security bulletin contains information about 1 vulnerability.

1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-93275)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to trigger a kernel warning.

The vulnerability exists due to improper resource lifecycle management in the Intel PT perf event stop and start callbacks when group throttling invokes callbacks without update flags. A local user can cause an Intel PT event to be throttled to trigger a kernel warning.

The issue can occur when AUX area sampling is used.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2e17bf3a469a41457a3bc31b1f8fd66b6ce94a6d
• https://git.kernel.org/stable/c/304844b5545f444d523286da8228a1cbc46ffffa
• https://git.kernel.org/stable/c/9b919fb5512f256e9e0604faf960b2bb98aab454
• https://git.kernel.org/stable/c/cab5015ee3f25f789b4a368f2abfa65536576b78