National Cyber-Alert System
Vulnerability Summary for CVE-2009-0745
Original release date:02/27/2009
Last revised:05/12/2009
Source:
US-CERT/NIST
Overview
The ext4_group_add function in fs/ext4/resize.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not properly initialize the group descriptor during a resize (aka resize2fs) operation, which might allow local users to cause a denial of service (OOPS) by arranging for crafted values to be present in available memory.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
- Official Statement from Red Hat (03/02/2009)
-
Red Hat is aware of this issue and is tracking it via the following bug:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-0745
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG. Future kernel update in Red Hat Enterprise Linux 5 will address this flaw.
References to Advisories, Solutions, and Tools
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External Source: VUPEN
Name: ADV-2009-0509
Type: Advisory
External Source: UBUNTU
Name: USN-751-1
External Source: DEBIAN
Name: DSA-1787
External Source: DEBIAN
Name: DSA-1749
External Source: SECUNIA
Name: 34981
External Source: SECUNIA
Name: 34394
External Source: CONFIRM
Name: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7
External Source: CONFIRM
Name: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fdff73f094e7220602cc3f8959c7230517976412
External Source: CONFIRM
Name: http://bugzilla.kernel.org/show_bug.cgi?id=12433
