Upstream information

CVE-2009-4141 at MITRE

Description

Use-after-free vulnerability in the fasync_helper function in fs/fcntl.c in the Linux kernel before 2.6.33-rc4-git1 allows local users to gain privileges via vectors that include enabling O_ASYNC (aka FASYNC or FIOASYNC) on a locked file, and then closing this file.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Note from the SUSE Security Team

This problem was introduced at some time in 2008 where locking was changed to be more finegrained. It affects openSUSE 11.2, and we are still evaluating if it affects SUSE Linux Enterprise 11. Older products are not affected by this problem.

SUSE Bugzilla entries: 565083 [RESOLVED / FIXED], 572937 [RESOLVED / INVALID]

SUSE Security Advisories:


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SLED-10-SP3 kernel-default Released
SLED-10-SP3 kernel-source Released
SLES-10-SP3 kernel-default Released
SLES-10-SP3 kernel-source Released
SUSE Linux Enterprise Desktop 11 kernel-default Released
SUSE Linux Enterprise Desktop 11 kernel-source Released
SUSE Linux Enterprise Server 11 kernel-default Released
SUSE Linux Enterprise Server 11 kernel-source Released