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CVE-2026-80992

HIGHCVSS 7.8/10EPSS 0.16%

Last modified

CVE-2026-80992 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.16%

5.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= a0d2f20650e81407d8e51ad2cbdc492861c74e9c, < 29ffd972531f8e6e0edf4ea3496190acff9fc9c2; >= a0d2f20650e81407d8e51ad2cbdc492861c74e9c, < bf3308416a2be85dcc9965b614a745b40beeff14; >= a0d2f20650e81407d8e51ad2cbdc492861c74e9c, < fc710f89a644e030a7ca15343176ca862fd61b9d; >= a0d2f20650e81407d8e51ad2cbdc492861c74e9c, < 8d4d06d6e2b501cb8e30ed3b1924c470358e8052; >= a0d2f20650e81407d8e51ad2cbdc492861c74e9c, < 0aaa53936419cf0c19c670387fc6d431e042a1b6; >= a0d2f20650e81407d8e51ad2cbdc492861c74e9c, < 1f77af0aaf277413ff32f6ff8c2c4282bd64c897
LinuxLinux4.2

References

Timeline

Published
Last Modified
Status
Received

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.
How severe is CVE-2026-80992?
CVE-2026-80992 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80992?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST