Riskcovery

CVE-2026-46172

ipv6: xfrm6: release dst on error in xfrm6_rcv_encap()

State
Published
Severity
Not scored
Published
May 28, 2026
Updated
Oct 15, 2026
Reserved
May 13, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before a0721bcd72641c32b281f227a94505b31cf54117Affected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before a20b34f6e854fe6f2aa82528fae7a88759919eb4Affected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before 870560015ce6e0d8f841c6a8aba33c44be52c727Affected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before c2efc4956981066df2fef1cc77391b523db6d8e4Affected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before 554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13Affected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before 9d5047782f9bd2829e529df69209bf3232eb561fAffected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before 6a5eec0a2a0e99ec9743cf8f1c4082178811d90aAffected
  • 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 to before bc0fcb9823cd0894934cf968b525c575833d7078Affected
LinuxLinux
  • 5.8Affected
  • before 5.8Not affected
  • 5.10.258 through 5.10.*Not affected
  • 5.15.209 through 5.15.*Not affected
  • 6.1.175 through 6.1.*Not affected
  • 6.6.140 through 6.6.*Not affected
  • 6.12.88 through 6.12.*Not affected
  • 6.18.30 through 6.18.*Not affected
  • 7.0.7 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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