CVE-2026-80992

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxa0d2f20650e81407d8e51ad2cbdc492861c74e9c < 29ffd972531f8e6e0edf4ea3496190acff9fc9c2affected
LinuxLinuxa0d2f20650e81407d8e51ad2cbdc492861c74e9c < bf3308416a2be85dcc9965b614a745b40beeff14affected
LinuxLinuxa0d2f20650e81407d8e51ad2cbdc492861c74e9c < fc710f89a644e030a7ca15343176ca862fd61b9daffected
LinuxLinuxa0d2f20650e81407d8e51ad2cbdc492861c74e9c < 8d4d06d6e2b501cb8e30ed3b1924c470358e8052affected
LinuxLinuxa0d2f20650e81407d8e51ad2cbdc492861c74e9c < 0aaa53936419cf0c19c670387fc6d431e042a1b6affected
LinuxLinuxa0d2f20650e81407d8e51ad2cbdc492861c74e9c < 1f77af0aaf277413ff32f6ff8c2c4282bd64c897affected
LinuxLinux4.2affected
LinuxLinux0 < 4.2unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.109 <= 6.12.*unaffected
LinuxLinux6.18.50 <= 6.18.*unaffected
LinuxLinux7.2.4 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References