Input validation error in Linux kernel - CVE-2011-2518
Published: May 25, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44038
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-2011-2518
CWE-ID: CWE-20
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 tomoyo_mount_acl function in security/tomoyo/mount.c in the Linux kernel before 2.6.39.2 calls the kern_path function with arguments taken directly from a mount system call, which allows local users to cause a denial of service (OOPS) or possibly have unspecified other impact via a NULL value for the device name.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
Ubuntu
linux (Ubuntu package)
How to mitigate CVE-2011-2518
Install update from vendor's website.
Linux kernel - update to 2.6.39.2
linux (Ubuntu package) - update to 2.6.38-13.56
linux (Ubuntu package) - update to 2.6.38-13.56
External References
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.2
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4e78c724d47e2342aa8fde61f6b8536f662f795f
- http://marc.info/?l=bugtraq&m=139447903326211&w=2
- http://www.openwall.com/lists/oss-security/2011/07/01/5
- https://github.com/torvalds/linux/commit/4e78c724d47e2342aa8fde61f6b8536f662f795f