Integer underflow in Linux kernel - CVE-2011-2497

Vulnerability identifier: #VU92543

CSH Severity: Low

CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2011-2497

CWE-ID: CWE-191

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The vulnerability exists due to integer underflow error. A remote non-authenticated attacker can execute arbitrary code.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 2.6.24-29.94, 2.6.32-35.78, 2.6.35-30.60, 2.6.38-12.51
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-30.60~lucid1
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-12.51~lucid1

• http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.0
• http://marc.info/?l=linux-kernel&m=130891911909436&w=2
• http://www.openwall.com/lists/oss-security/2011/06/24/9
• https://bugzilla.redhat.com/show_bug.cgi?id=716805
• http://www.securityfocus.com/bid/48472
• http://www.osvdb.org/74679
• http://www.openwall.com/lists/oss-security/2011/06/27/3
• http://securityreason.com/securityalert/8359
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ac28817536797fd40e9646452183606f9e17f71

• Integer underflow in Linux kernel
• Ubuntu update for linux-lts-backport-maverick
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux-lts-backport-natty