CVE-2026-46172
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
ipv6: xfrm6: release dst on error in xfrm6_rcv_encap()
xfrm6_rcv_encap() performs an IPv6 route lookup when the skb does not
already have a dst attached. ip6_route_input_lookup() returns a
referenced dst entry even when the lookup resolves to an error route.
If dst->error is set, xfrm6_rcv_encap() drops the skb without attaching
the dst to the skb and without releasing the reference returned by the
lookup. Repeated packets hitting this path therefore leak dst entries.
Release the dst before jumping to the drop path.
https://git.kernel.org/stable/c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13
https://git.kernel.org/stable/c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90a
https://git.kernel.org/stable/c/9d5047782f9bd2829e529df69209bf3232eb561f
https://git.kernel.org/stable/c/bc0fcb9823cd0894934cf968b525c575833d7078
https://git.kernel.org/stable/c/c2efc4956981066df2fef1cc77391b523db6d8e4