CVE-2026-80992 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: net: ravb: avoid dereferencing an invalid PTP clock The PTP clock is unavailable before the first open, so querying its index can dereference a NULL pointer. Registration failures can also leave an error pointer in priv->ptp.clock. Cache the PHC index separately and report -1 while no clock is registered. Normalize registration errors to NULL and preserve the static timestamping capabilities.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0aaa53936419cf0c19c670387fc6d431e042a1b6 https://git.kernel.org/stable/c/1f77af0aaf277413ff32f6ff8c2c4282bd64c897 https://git.kernel.org/stable/c/29ffd972531f8e6e0edf4ea3496190acff9fc9c2 https://git.kernel.org/stable/c/8d4d06d6e2b501cb8e30ed3b1924c470358e8052 https://git.kernel.org/stable/c/bf3308416a2be85dcc9965b614a745b40beeff14 https://git.kernel.org/stable/c/fc710f89a644e030a7ca15343176ca862fd61b9d

Frequently Asked Questions

What is CVE-2026-80992? +

In the Linux kernel, the following vulnerability has been resolved: net: ravb: avoid dereferencing an invalid PTP clock The PTP clock is unavailable before the first open, so querying its index can dereference a NULL pointer. Registration failures can also leave an error pointer in priv->ptp.clock. Cache the PHC index separately and report -1 while no clock is registered. Normalize registration errors to NULL and preserve the static timestamping capabilities. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-80992? +

CVE-2026-80992 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-80992? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-80992