Integer overflow in Linux kernel - CVE-2011-1593

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Main Vulnerability Database Vulnerabilities #VU45089

Integer overflow in Linux kernel - CVE-2011-1593

Published: May 3, 2011 / Updated: August 11, 2020


Vulnerability identifier: #VU45089
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1593
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Multiple integer overflows in the next_pidmap function in kernel/pid.c in the Linux kernel before 2.6.38.4 allow local users to cause a denial of service (system crash) via a crafted (1) getdents or (2) readdir system call.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-317-ec2 (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)

How to mitigate CVE-2011-1593

Install update from vendor's website.

Linux kernel - update to 2.6.38.4
linux (Ubuntu package) - addressed in versions 2.6.24-29.90, 2.6.32-33.70, 2.6.35-30.54, 2.6.38-10.46
linux-image-2.6.32-317-ec2 (Ubuntu package) - update to 2.6.32-317.36
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-30.56~lucid1

External References

Related Security Bulletins