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 cache, and the lwtunnel state will never be freed. Discovered by the ioam6.sh test, kmemleak was recently fixed to catch per-cpu memory leaks. I'm not sure if rpl and seg6 can actually hit this, but in principle I don't see why not.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 cache, and the     lwtunnel state will never be freed. Discovered by the ioam6.sh test, kmemleak was recently fixed to catch     per-cpu memory leaks. I'm not sure if rpl and seg6 can actually hit this, but in principle I don't see why     not. (CVE-2025-21768)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

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CVE-2025-21768

medium

Tenable Plugins

medium