vsock/virtio: discard packets if the transport changes

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21669
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-01-31 12:15:28 UTC
Updated2026-05-12 13:16:31 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: vsock/virtio: discard packets if the transport changes If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when we access vsk->transport. A possible scenario is described by Hyunwoo Kim in the attached link, where after a first connect() interrupted by a signal, and a second connect() failed, we can find `vsk->transport` at NULL, leading to a NULL pointer dereference.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476 | CWE-476 CWE-476 NULL Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 18a7fc371d1dbf8deff16c2dd9292bcc73f43040 git Not specified
CNA Linux Linux affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 6486915fa661584d70e8e7e4068c6c075c67dd6d git Not specified
CNA Linux Linux affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 88244163bc7e7b0ce9dd7bf4c8a563b41525c3ee git Not specified
CNA Linux Linux affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a d88b249e14bd0ee1e46bbe4f456e22e01b8c68de git Not specified
CNA Linux Linux affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 677579b641af109613564460a4e3bdcb16850b61 git Not specified
CNA Linux Linux affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1 git Not specified
CNA Linux Linux affected 5.5 Not specified
CNA Linux Linux unaffected 5.5 semver Not specified
CNA Linux Linux unaffected 5.10.234 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.177 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.127 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.74 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.11 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d88b249e14bd0ee1e46bbe4f456e22e01b8c68de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/88244163bc7e7b0ce9dd7bf4c8a563b41525c3ee 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00002.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/18a7fc371d1dbf8deff16c2dd9292bcc73f43040 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/6486915fa661584d70e8e7e4068c6c075c67dd6d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/677579b641af109613564460a4e3bdcb16850b61 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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