Bug 862877 (CVE-2012-0957)

Summary:	CVE-2012-0957 kernel: uts: stack memory leak in UNAME26
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	aex1uet, bhu, iboverma, jkacur, jneedle, lgoncalv, mcressma, rt-maint, security-response-team, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-08-24 13:25:52 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	862881, 864822, 864824
Bug Blocks:	862886

Description Petr Matousek 2012-10-03 19:58:06 UTC

Description of the problem:
The uname() syscall since 3.0 with the UNAME26 personality leaks kernel
stack memory contents.

Acknowledgements:

Red Hat would like to thank Kees Cook for reporting this issue.

Comment 4 Petr Matousek 2012-10-03 20:09:57 UTC

Statement:

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 5.

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 6.

This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise MRG 2.

Comment 6 Petr Matousek 2012-10-10 08:11:18 UTC

Created kernel tracking bugs for this issue

Affects: fedora-all [bug 864824]

Comment 7 Petr Matousek 2012-10-10 08:12:33 UTC

Upstream proposed patch:

https://lkml.org/lkml/2012/10/9/550

Comment 8 John Kacur 2012-11-06 11:12:07 UTC

This is the upstream patch
git describe --all --contains 2702b1526c7278c4d65d78de209a465d4de2885e
tags/v3.7-rc2~10^2~5

Comment 9 errata-xmlrpc 2012-12-04 19:59:18 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:1491 https://rhn.redhat.com/errata/RHSA-2012-1491.html

Comment 10 joashch 2025-02-08 04:24:30 UTC

Security vulnerabilities like CVE-2012-0957 highlight the importance of rigorous kernel security practices. Memory leaks in UNAME26 can pose significant risks, emphasizing the need for timely patches and system updates. More insights can be found at https://3patticrown.me/.