af_unix: Fix memleak of newsk in unix_stream_connect().

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45887
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:02 UTC
Updated2026-06-25 21:13:24 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: af_unix: Fix memleak of newsk in unix_stream_connect(). When prepare_peercred() fails in unix_stream_connect(), unix_release_sock() is not called for newsk, and the memory is leaked. Let's move prepare_peercred() before unix_create1().

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

EPSS: 0.000170000 probability, percentile 0.042650000 (date 2026-06-01)

Problem Types: CWE-401

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 fd0a109a0f6b7524543d17520da92a44a9f5343c 365996a2b14d07caa9e33d367b67ea26c09d89b4 git Not specified
CNA Linux Linux affected fd0a109a0f6b7524543d17520da92a44a9f5343c a5d95d7caba0160fb7b2b8d2bd96d5a1be861d9f git Not specified
CNA Linux Linux affected fd0a109a0f6b7524543d17520da92a44a9f5343c 6884028cd7f275f8bcb854a347265cb1fb0e4bea git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6884028cd7f275f8bcb854a347265cb1fb0e4bea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/365996a2b14d07caa9e33d367b67ea26c09d89b4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a5d95d7caba0160fb7b2b8d2bd96d5a1be861d9f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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