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() 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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13	Patch
https://git.kernel.org/stable/c/6a5eec0a2a0e99ec9743cf8f1c4082178811d90a	Patch
https://git.kernel.org/stable/c/870560015ce6e0d8f841c6a8aba33c44be52c727	Patch
https://git.kernel.org/stable/c/9d5047782f9bd2829e529df69209bf3232eb561f	Patch
https://git.kernel.org/stable/c/a0721bcd72641c32b281f227a94505b31cf54117	Patch
https://git.kernel.org/stable/c/a20b34f6e854fe6f2aa82528fae7a88759919eb4	Patch
https://git.kernel.org/stable/c/bc0fcb9823cd0894934cf968b525c575833d7078	Patch
https://git.kernel.org/stable/c/c2efc4956981066df2fef1cc77391b523db6d8e4	Patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::

History

No history.

Information

Published : 2026-05-28 10:16

Updated : 2026-09-08 09:18

NVD link : CVE-2026-46172

Mitre link : CVE-2026-46172

CVE.ORG link : CVE-2026-46172

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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following vulnerability has been resolved:\n\nipv6: xfrm6: release dst on error in xfrm6_rcv_encap()\n\nxfrm6_rcv_encap() performs an IPv6 route lookup when the skb does not\nalready have a dst attached. ip6_route_input_lookup() returns a\nreferenced dst entry even when the lookup resolves to an error route.\n\nIf dst->error is set, xfrm6_rcv_encap() drops the skb without attaching\nthe dst to the skb and without releasing the reference returned by the\nlookup. Repeated packets hitting this path therefore leak dst entries.\n\nRelease the dst before jumping to the drop path."}], "lastModified": "2026-09-08T09:18:08.457", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "40E51E64-6FFB-47A5-B645-DC521C2C3E90", "versionEndExcluding": "5.10.258", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5AFBE0EC-CCDF-4207-AE92-ABF958125CA4", "versionEndExcluding": "6.12.88", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF39AE08-AE6D-4410-8FBE-76F6BF5BF55B", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}