CVE-2026-46172
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()…
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13Patch
- https://git.kernel.org/stable/c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90aPatch
- https://git.kernel.org/stable/c/870560015ce6e0d8f841c6a8aba33c44be52c727Patch
- https://git.kernel.org/stable/c/9d5047782f9bd2829e529df69209bf3232eb561fPatch
- https://git.kernel.org/stable/c/a0721bcd72641c32b281f227a94505b31cf54117Patch
- https://git.kernel.org/stable/c/a20b34f6e854fe6f2aa82528fae7a88759919eb4Patch
- https://git.kernel.org/stable/c/bc0fcb9823cd0894934cf968b525c575833d7078Patch
- https://git.kernel.org/stable/c/c2efc4956981066df2fef1cc77391b523db6d8e4Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.