SB2012061308 - Input validation error in Linux kernel
Published: June 13, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012061308
Severity
Medium
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-2011-2496)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Integer overflow in the vma_to_resize function in mm/mremap.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (BUG_ON and system crash) via a crafted mremap system call that expands a memory mapping.
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=982134ba62618c2d69fbbbd166d0a11ee3b7e3d8
- http://www.openwall.com/lists/oss-security/2011/06/27/2
- https://bugzilla.redhat.com/show_bug.cgi?id=716538
- https://github.com/torvalds/linux/commit/982134ba62618c2d69fbbbd166d0a11ee3b7e3d8