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Description

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.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-28 | Updated 2026-06-01 | Assigner Linux

Product status

Default status
unaffected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before a0721bcd72641c32b281f227a94505b31cf54117
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before a20b34f6e854fe6f2aa82528fae7a88759919eb4
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before 870560015ce6e0d8f841c6a8aba33c44be52c727
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before c2efc4956981066df2fef1cc77391b523db6d8e4
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before 554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before 9d5047782f9bd2829e529df69209bf3232eb561f
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before 6a5eec0a2a0e99ec9743cf8f1c4082178811d90a
affected

0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (git) before bc0fcb9823cd0894934cf968b525c575833d7078
affected

Default status
affected

5.8
affected

Any version before 5.8
unaffected

5.10.258 (semver)
unaffected

5.15.209 (semver)
unaffected

6.1.175 (semver)
unaffected

6.6.140 (semver)
unaffected

6.12.88 (semver)
unaffected

6.18.30 (semver)
unaffected

7.0.7 (semver)
unaffected

7.1-rc3 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/a0721bcd72641c32b281f227a94505b31cf54117

git.kernel.org/...c/a20b34f6e854fe6f2aa82528fae7a88759919eb4

git.kernel.org/...c/870560015ce6e0d8f841c6a8aba33c44be52c727

git.kernel.org/...c/c2efc4956981066df2fef1cc77391b523db6d8e4

git.kernel.org/...c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13

git.kernel.org/...c/9d5047782f9bd2829e529df69209bf3232eb561f

git.kernel.org/...c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90a

git.kernel.org/...c/bc0fcb9823cd0894934cf968b525c575833d7078

cve.org (CVE-2026-46172)

nvd.nist.gov (CVE-2026-46172)

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