kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels

A flaw was found in the Linux kernel's IPv6 networking implementation, specifically within the seg6 and rpl lwtunnels. A race condition can occur when handling destination cache entries, where a NOREF no reference destination object is used after it has been freed. This use-after-free vulnerabili...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: net: ipv6: Fixed issues with reference loops in RPL, Seg6, and Ioam6 lwtunnels. Some lwtunnels have a destination cache for the transformed destination address. If the packet destination does not change, we might end up...

SUSE CVE-2025-21768

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels Some lwtunnels have a dst cache for post-transformation dst. If the packet destination did not change we may end up recording a reference to the lwtunnel in its own...

PT-2025-8880

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A issue in the Linux kernel has been identified, specifically in the ipv6 component, where certain lwtunnels such as rpl, seg6, and ioam6 have a dst cache for post-transformation dst. Th...