PT-2009-3521 · Linux · Linux Kernel

Eugene Teo · CVE-2009-0935 · Published 2009-03-18 · Updated 2024-02-09

Positive Technologies (AI Summary)

CVSS v2.0

4.7

Medium

Base vector

AV:L/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions 2.6.27 through 2.6.27.13 Linux kernel versions 2.6.28 through 2.6.28.2 Linux kernel version 2.6.29-rc3

Description The issue allows local users to cause a denial of service via a read with an invalid address to an inotify instance. This causes the device's event list mutex to be unlocked twice, preventing proper synchronization of a data structure for the inotify instance.

Recommendations For Linux kernel versions 2.6.27 through 2.6.27.13, update to a version outside of this range to resolve the issue. For Linux kernel versions 2.6.28 through 2.6.28.2, update to a version outside of this range to resolve the issue. For Linux kernel version 2.6.29-rc3, update to a newer version to resolve the issue. As a temporary workaround, consider restricting access to the inotify instance to minimize the risk of exploitation.

Fix

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

CVE-2009-0935

Affected Products

Linux Kernel

References · 10

• http://securityfocus.com/bid/33624 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2009-0935 · Security Note
• http://marc.info/?l=linux-kernel&m=123337123501681&w=2 · Patch
• https://bugzilla.redhat.com/show_bug.cgi?id=488935 · Patch
• http://openwall.com/lists/oss-security/2009/03/06/2 · Patch
• http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.3 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49331 · Note
• https://t.me/cvenotify/70702 · Telegram Post
• http://openwall.com/lists/oss-security/2009/03/18/5 · Note
• http://openwall.com/lists/oss-security/2009/03/19/2 · Note