CVE-2026-80992
Published: September 15, 2026Last modified: October 6, 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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.189-r0) |
| 25 LTS | linux-lts | Fixed (6.12.111-r0) | |
| Stream | linux-lts | Fixed (6.18.53-r0) |
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