PT-2011-3913 · Linux+2 · Linux Kernel+2

Published 2011-07-21 · Updated 2023-02-13 · CVE-2011-2525

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.35

Description The issue is related to the qdisc notify function in the Linux kernel, which does not prevent tc fill qdisc function calls from referencing builtin Qdisc structures. This allows local users to cause a denial of service, potentially resulting in a NULL pointer dereference and OOPS, or possibly having other unspecified impacts via a crafted call.

Recommendations For Linux kernel versions prior to 2.6.35, update to version 2.6.35 or later to resolve the issue.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2011-2525

DSA-2303-1

DSA-2310-1

RHSA-2011:1065

RHSA-2011:1163

RHSA-2011_1065

RHSA-2011_1163

USN-1241-1

USN-1256-1

USN-1268-1

USN-1269-1

USN-1274-1

USN-1286-1

Affected Products

Linux Kernel

Red Hat

Suse

References · 25

• 🔥 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=53b0f08042f04813cd1a7473dacd3edfacb28eb3 · Exploit
• https://ubuntu.com/security/notices/USN-1241-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-2525 · Security Note
• https://ubuntu.com/security/notices/USN-1269-1 · Vendor Advisory
• http://openwall.com/lists/oss-security/2011/07/12/1 · Patch
• https://ubuntu.com/security/notices/USN-1256-1 · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2011-1065.html · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2011-1163.html · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=720552 · Patch
• https://linux.oracle.com/errata/ELSA-2011-2037.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1274-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2011-2525 · Security Note
• https://ubuntu.com/security/notices/USN-1286-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2011-2525 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1268-1 · Vendor Advisory