What’s Vulnerable › Vulnerabilities

CVE-2026-80992: net: ravb: avoid dereferencing an invalid PTP clock

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-11 · updated 2026-10-19

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.

Affected products

• Linux kernel: 4.2 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

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

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