Race condition in Linux kernel - CVE-2011-1768
Published: June 13, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43991
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1768
CWE-ID: CWE-362
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.
The tunnels implementation in the Linux kernel before 2.6.34, when tunnel functionality is configured as a module, allows remote attackers to cause a denial of service (OOPS) by sending a packet during module loading.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-318-ec2 (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-318-ec2 (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
How to mitigate CVE-2011-1768
Install update from vendor's website.
linux (Ubuntu package) - addressed in versions 2.6.24-30.96, 2.6.32-34.77
linux-image-2.6.32-318-ec2 (Ubuntu package) - update to 2.6.32-318.38
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-12.51~lucid1
linux-image-2.6.32-318-ec2 (Ubuntu package) - update to 2.6.32-318.38
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-12.51~lucid1
External References
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978
- http://www.openwall.com/lists/oss-security/2011/05/05/6
- https://bugzilla.redhat.com/show_bug.cgi?id=702303
- https://github.com/torvalds/linux/commit/d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978