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CVE-2026-45887

af_unix: Fix memleak of newsk in unix_stream_connect().

MEDIUM
5.5
CVSS Score
Published: May 27, 2026 at 12:16 PM UTC
Updated: June 27, 2026 at 11:41 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

In 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().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.16 ≤ v < 6.18.146.16 ≤ v < 6.19.46.16 ≤ v < 7.06.19 ≤ v < 6.19.46.16fd0a109a0f6b7524543d17520da92a44a9f5343c
Vendor states this is fixed in 365996a2b14d07caa9e33d367b67ea26c09d89b4 (fixed)
Vendor states this is fixed in 6884028cd7f275f8bcb854a347265cb1fb0e4bea (fixed)
Vendor states this is fixed in a5d95d7caba0160fb7b2b8d2bd96d5a1be861d9f (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.14 (unaffected)
Vendor states this is fixed in 6.19.4 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

References (3)

Patch
Source: cverecord
https://git.kernel.org/stable/c/365996a2b14d07caa9e33d367b67ea26c09d89b4
Patch
Source: cverecord
https://git.kernel.org/stable/c/a5d95d7caba0160fb7b2b8d2bd96d5a1be861d9f
Patch
Source: cverecord
https://git.kernel.org/stable/c/6884028cd7f275f8bcb854a347265cb1fb0e4bea

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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