SB2012051708 - Heap-based buffer overflow in Linux kernel
Published: May 17, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012051708
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2012-0038)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Integer overflow in the xfs_acl_from_disk function in fs/xfs/xfs_acl.c in the Linux kernel before 3.1.9. A remote attacker can use a filesystem with a malformed ACL to trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.9
- http://www.openwall.com/lists/oss-security/2012/01/10/11
- https://bugzilla.redhat.com/show_bug.cgi?id=773280
- https://github.com/torvalds/linux/commit/093019cf1b18dd31b2c3b77acce4e000e2cbc9ce
- https://github.com/torvalds/linux/commit/fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba