CVE Vulnerabilities

CVE-2011-2525

NULL Pointer Dereference

Published: Feb 02, 2012 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
4.9 MODERATE
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V3
Ubuntu
MEDIUM

The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a crafted call.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux * 2.6.35 (excluding)
Red Hat Enterprise Linux 5 RedHat kernel-0:2.6.18-274.el5 *
Red Hat Enterprise Linux 5 RedHat kernel-0:2.6.18-238.21.1.el5 *
Linux Ubuntu hardy *
Linux Ubuntu lucid *
Linux Ubuntu maverick *
Linux Ubuntu upstream *
Linux-armadaxp Ubuntu upstream *
Linux-ec2 Ubuntu lucid *
Linux-ec2 Ubuntu maverick *
Linux-ec2 Ubuntu upstream *
Linux-flo Ubuntu upstream *
Linux-fsl-imx51 Ubuntu lucid *
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 lucid *
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-lts-quantal Ubuntu upstream *
Linux-lts-raring Ubuntu upstream *
Linux-lts-saucy Ubuntu upstream *
Linux-lts-trusty Ubuntu upstream *
Linux-lts-utopic Ubuntu upstream *
Linux-lts-vivid 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 lucid *
Linux-mvl-dove Ubuntu maverick *
Linux-mvl-dove Ubuntu upstream *
Linux-raspi2 Ubuntu upstream *
Linux-raspi2 Ubuntu vivid/ubuntu-core *
Linux-ti-omap4 Ubuntu maverick *
Linux-ti-omap4 Ubuntu upstream *

Potential Mitigations

References