SB2012061319 - Input validation error in Linux kernel
Published: June 13, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012061319
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2011-2493)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel before 2.6.39 does not properly initialize a certain error-report data structure, which allows local users to cause a denial of service (OOPS) by attempting to mount a crafted ext4 filesystem.
Remediation
Install update from vendor's website.
References
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0449641130f5652b344ef6fa39fa019d7e94660a
- http://www.openwall.com/lists/oss-security/2011/06/24/4
- https://github.com/torvalds/linux/commit/0449641130f5652b344ef6fa39fa019d7e94660a