SB2026072048 - Improper Initialization in Linux kernel intel idpf driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Initialization (CVE-ID: CVE-2026-64162)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 6.8 [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]

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

The vulnerability exists due to improper initialization in idpf_ptp_init() and the PTP auxiliary worker when scheduling PTP worker execution before initializing read_dev_clk_lock. A local user can trigger the vulnerable code path to cause a denial of service.

The issue is triggered by a race condition where the auxiliary worker can immediately access the lock before initialization, leading to a kernel lockdep warning.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/3122d70b7c0101d897fb795658a7b93f854935f2
• https://git.kernel.org/stable/c/da4f76b6a84ede14a71282ef841768299ead0221
• https://git.kernel.org/stable/c/eb5991d4c8ba2e8153dfcda3e66a9608377b7dce