Input validation error in Linux kernel - CVE-2009-4306
Published: December 13, 2009 / Updated: March 19, 2012
Vulnerability identifier: #VU94170
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2009-4306
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
Unspecified vulnerability in the EXT4_IOC_MOVE_EXT (aka move extents) ioctl implementation in the ext4 filesystem in the Linux kernel 2.6.32-git6 and earlier allows local users to cause a denial of service (filesystem corruption) via unknown vectors, a different vulnerability than CVE-2009-4131.
How to mitigate CVE-2009-4306
Install update from vendor's website.
Sources
- http://grsecurity.org/test/grsecurity-2.1.14-2.6.32-200912112157.patch
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://secunia.com/advisories/38017
- http://twitter.com/fotisl/statuses/6568947714
- http://twitter.com/spendergrsec/statuses/6551797457
- http://twitter.com/spendergrsec/statuses/6567167692
- http://twitter.com/spendergrsec/statuses/6569596339
- http://twitter.com/spendergrsec/statuses/6572069107
- http://twitter.com/spendergrsec/statuses/6583954567
- http://twitter.com/tytso/statuses/6571730411
- https://bugzilla.redhat.com/show_bug.cgi?id=547263