Vulnerability Snapshot
CVE-2026-64162 is rated CRITICAL — exploitation is trivial or already observed in the wild and impact is severe. Patch immediately, not on the next maintenance window.
Executive Summary
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]
[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
Why It Matters
CVE-2026-64162 is rated CRITICAL severity, requiring immediate attention from security teams.
CVSS Base Score: 9.8/10
🛡️What Defenders Should Check
Use Vulnios to continuously monitor your exposure to CVE-2026-64162 and similar vulnerabilities.
References & Sources
How Vulnios Detects This
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Sources
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Frequently Asked Questions
What is CVE-2026-64162?
CVE-2026-64162 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. 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_schedu
Am I affected?
Affected technology is listed in the Affected Products section above. If your asset inventory contains any of them, assume in-scope until you can prove otherwise.
How urgent is the response?
Critical: do not wait for your normal patch cycle. Verify exposure today, apply the vendor patch immediately, and add detection rules for any post-exploit indicators.
How do I remediate?
Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.
Where can I track exploitation activity?
Watch CISA's Known Exploited Vulnerabilities catalog for CVE-2026-64162. Cross-reference with public exploit databases and your own SIEM/IDS for indicator-of-compromise patterns. Vulnios tracks KEV status automatically and surfaces it on the asset findings view.
How does Vulnios help with this?
Vulnios continuously cross-references your asset inventory against the live CVE feed (NVD, vendor advisories, CISA KEV, and curated OSINT). When a new CVE matches your environment, you get a prioritized finding with the severity, KEV status, exploit-prediction (EPSS), and a direct path to the vendor patch. You can start a free scan from the homepage.
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