CVE-2011-2525

HIGH

Description

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.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=53b0f08042f04813cd1a7473dacd3edfacb28eb3

http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805

http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35

http://openwall.com/lists/oss-security/2011/07/12/1

http://rhn.redhat.com/errata/RHSA-2011-1065.html

http://rhn.redhat.com/errata/RHSA-2011-1163.html

https://bugzilla.redhat.com/show_bug.cgi?id=720552

Details

Source: MITRE

Published: 2012-02-02

Updated: 2014-01-14

Risk Information

CVSS v2.0

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH