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Vulnerability Details : CVE-2011-2525

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.
Publish Date : 2012-02-02 Last Update Date : 2020-08-04
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 476

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
4.9
AV:L/AC:L/Au:N/C:N/I:N/A:C 2011-07-12 2010-05-21
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-2525 oval:org.opensuse.security:def:20112525 unix
DEPRECATED: ELSA-2011-1065 -- Oracle Linux 5.7 kernel security and bug fix update (important) oval:org.mitre.oval:def:27720 unix
DSA-2303-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14248 unix
DSA-2303-2 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14888 unix
DSA-2310-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14257 unix
ELSA-2011-2037 -- Unbreakable Enterprise kernel security and bug fix update (moderate) oval:org.mitre.oval:def:27916 unix
ELSA-2011:1065: Oracle Linux 5.x.7 kernel security and bug fix update (Important) oval:org.mitre.oval:def:22877 unix
RHSA-2011:1065: Red Hat Enterprise Linux 5.7 kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20111065 unix
RHSA-2011:1065: Red Hat Enterprise Linux 5.7 kernel security and bug fix update (Important) oval:org.mitre.oval:def:21936 unix
RHSA-2011:1163: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20111163 unix
SUSE-SU-2013:1832-1 -- Security update for Linux kernel oval:org.mitre.oval:def:25739 unix
VMware ESXi and ESX updates to third party library and ESX Service Console oval:org.mitre.oval:def:20671 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-2525

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 OS Redhat Enterprise Linux 4.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1
Redhat Enterprise Linux 1

- References For CVE-2011-2525

http://rhn.redhat.com/errata/RHSA-2011-1065.html
REDHAT RHSA-2011:1065
http://openwall.com/lists/oss-security/2011/07/12/1
MLIST [oss-security] 20110712 CVE-2011-2525 kernel: kernel: net_sched: fix qdisc_notify()
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=53b0f08042f04813cd1a7473dacd3edfacb28eb3 CONFIRM
http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35 CONFIRM
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805
MLIST [netdev] 20100521 tc: RTM_GETQDISC causes kernel OOPS
https://bugzilla.redhat.com/show_bug.cgi?id=720552 CONFIRM
http://rhn.redhat.com/errata/RHSA-2011-1163.html
REDHAT RHSA-2011:1163

- Metasploit Modules Related To CVE-2011-2525

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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