Out-of-bounds read in Linux kernel - CVE-2011-1770

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Main Vulnerability Database Vulnerabilities #VU44912

Out-of-bounds read in Linux kernel - CVE-2011-1770

Published: June 24, 2011 / Updated: August 11, 2020


Vulnerability identifier: #VU44912
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1770
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to a boundary error in Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14. A remote attacker can perform a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.


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-2011-1770

Update to version 2.6.33.14.

Linux kernel - update to 2.6.33.14
linux (Ubuntu package) - addressed in versions 2.6.32-33.70, 2.6.35-30.59, 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 2.6.35-30.59~lucid1

External References

Related Security Bulletins