CVE-2026-64162

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()

In idpf_ptp_init(), read_dev_clk_lock is initialized after

ptp_schedule_worker() had already been called (and after

idpf_ptp_settime64() could reach the lock). The PTP aux worker

fires immediately upon scheduling and can call into

idpf_ptp_read_src_clk_reg_direct(), which takes

spin_lock(&ptp->read_dev_clk_lock) on an uninitialized lock, triggering

the lockdep "non-static key" warning:

[12973.796587] idpf 0000:83:00.0: Device HW Reset initiated

[12974.094507] INFO: trying to register non-static key.

...

[12974.097208] Call Trace:

[12974.097213] <TASK>

[12974.097218] dump_stack_lvl+0x93/0xe0

[12974.097234] register_lock_class+0x4c4/0x4e0

[12974.097249] ? __lock_acquire+0x427/0x2290

[12974.097259] __lock_acquire+0x98/0x2290

[12974.097272] lock_acquire+0xc6/0x310

[12974.097281] ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]

[12974.097311] ? lockdep_har

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References