CVE-2026-80992

net: ravb: avoid dereferencing an invalid PTP clock

State: Published
Severity: 7.8 High
Published: Sep 11, 2026
Updated: Oct 19, 2026
Reserved: Aug 26, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 29ffd972531f8e6e0edf4ea3496190acff9fc9c2Affected a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before bf3308416a2be85dcc9965b614a745b40beeff14Affected a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before fc710f89a644e030a7ca15343176ca862fd61b9dAffected a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 8d4d06d6e2b501cb8e30ed3b1924c470358e8052Affected a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 0aaa53936419cf0c19c670387fc6d431e042a1b6Affected a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 1f77af0aaf277413ff32f6ff8c2c4282bd64c897Affected
LinuxLinux	4.2Affected before 4.2Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.109 through 6.12.Not affected 6.18.50 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 29ffd972531f8e6e0edf4ea3496190acff9fc9c2Affected
a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before bf3308416a2be85dcc9965b614a745b40beeff14Affected
a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before fc710f89a644e030a7ca15343176ca862fd61b9dAffected
a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 8d4d06d6e2b501cb8e30ed3b1924c470358e8052Affected
a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 0aaa53936419cf0c19c670387fc6d431e042a1b6Affected
a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 1f77af0aaf277413ff32f6ff8c2c4282bd64c897Affected

LinuxLinux

4.2Affected
before 4.2Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.109 through 6.12.*Not affected
6.18.50 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

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