Bug 2482042 (CVE-2026-45887)

Summary:	CVE-2026-45887 kernel: af_unix: Fix memleak of newsk in unix_stream_connect()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's `af_unix` subsystem. This vulnerability, a memory leak, occurs in the `unix_stream_connect()` function when a specific internal operation fails to release allocated memory. Over time, this unreleased memory could accumulate, potentially leading to system instability or a Denial of Service (DoS) condition.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-27 15:08:28 UTC

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().

Comment 1 Keith Grant 2026-05-28 03:02:02 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052716-CVE-2026-45887-8c83@gregkh/T