Input validation error in Linux kernel - CVE-2011-3638
Published: March 1, 2013 / Updated: February 13, 2023
Vulnerability identifier: #VU93713
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-3638
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.
fs/ext4/extents.c in the Linux kernel before 3.0 does not mark a modified extent as dirty in certain cases of extent splitting, which allows local users to cause a denial of service (system crash) via vectors involving ext4 umount and mount operations.
How to mitigate CVE-2011-3638
Install update from vendor's website.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=747942
- https://github.com/torvalds/linux/commit/667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3
- http://www.openwall.com/lists/oss-security/2011/10/24/2
- http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3