PT-2011-2574 · Linux · Linux Kernel

Frank Arnold · Published 2011-02-18 · Updated 2023-02-13 · CVE-2011-0709

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.35-rc5

Description The issue is related to the br mdb ip get function in the Linux kernel, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an IGMP packet. This is due to a lack of a multicast table.

Recommendations For Linux kernel versions prior to 2.6.35-rc5, update to version 2.6.35-rc5 or later to resolve the issue. As a temporary workaround, consider restricting access to the br multicast.c module to minimize the risk of exploitation.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2011-0709

Affected Products

Linux Kernel

References · 9

• 🔥 http://spinics.net/lists/netdev/msg134414.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2011-0709 · Security Note
• http://openwall.com/lists/oss-security/2011/02/16/1 · Patch
• http://openwall.com/lists/oss-security/2011/02/16/8 · Patch
• http://spinics.net/lists/netdev/msg134444.html · Patch
• http://securityfocus.com/bid/41432 · Note
• http://openwall.com/lists/oss-security/2011/02/16/14 · Note
• http://kernel.org/pub/linux/kernel/v2.6/testing/v2.6.35/ChangeLog-2.6.35-rc5 · Note
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7f285fa78d4b81b8458f05e77fb6b46245121b4e · Note