CVE Vulnerabilities

CVE-2011-2689

Uncontrolled Resource Consumption

Published: Jul 28, 2011 | Modified: Apr 11, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.9 MEDIUM
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
4.9 MODERATE
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V3
Ubuntu
LOW

The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel before 3.0-rc1 does not ensure that the size of a chunk allocation is a multiple of the block size, which allows local users to cause a denial of service (BUG and system crash) by arranging for all resource groups to have too little free space.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux * 3.0 (excluding)
Linux_kernel Linux 3.0 (including) 3.0 (including)
Linux_kernel Linux 3.0-rc1 (including) 3.0-rc1 (including)
Red Hat Enterprise Linux 5 RedHat kernel-0:2.6.18-274.el5 *
Red Hat Enterprise Linux 6 RedHat kernel-0:2.6.32-131.12.1.el6 *
Linux Ubuntu natty *
Linux Ubuntu upstream *
Linux-ec2 Ubuntu maverick *
Linux-ec2 Ubuntu upstream *
Linux-flo Ubuntu upstream *
Linux-fsl-imx51 Ubuntu upstream *
Linux-goldfish Ubuntu saucy *
Linux-goldfish Ubuntu upstream *
Linux-grouper Ubuntu saucy *
Linux-grouper Ubuntu upstream *
Linux-lts-backport-maverick Ubuntu upstream *
Linux-lts-backport-natty Ubuntu lucid *
Linux-lts-backport-natty Ubuntu upstream *
Linux-lts-backport-oneiric Ubuntu upstream *
Linux-maguro Ubuntu saucy *
Linux-maguro Ubuntu upstream *
Linux-mako Ubuntu saucy *
Linux-mako Ubuntu upstream *
Linux-manta Ubuntu saucy *
Linux-manta Ubuntu upstream *
Linux-mvl-dove Ubuntu upstream *
Linux-ti-omap4 Ubuntu natty *
Linux-ti-omap4 Ubuntu upstream *

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References