Input validation error in Linux kernel - CVE-2012-3511
Published: October 4, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43439
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-3511
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 local users to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (use-after-free and system crash) via vectors involving a (1) munmap or (2) close system call.
How to mitigate CVE-2012-3511
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9ab4233dd08036fe34a89c7dc6f47a8bf2eb29eb
- http://secunia.com/advisories/50633
- http://secunia.com/advisories/50732
- http://secunia.com/advisories/55055
- http://ubuntu.com/usn/usn-1529-1
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
- http://www.openwall.com/lists/oss-security/2012/08/20/13
- http://www.securityfocus.com/bid/55151
- http://www.ubuntu.com/usn/USN-1567-1
- http://www.ubuntu.com/usn/USN-1572-1
- http://www.ubuntu.com/usn/USN-1577-1
- https://bugzilla.redhat.com/show_bug.cgi?id=849734
- https://github.com/torvalds/linux/commit/9ab4233dd08036fe34a89c7dc6f47a8bf2eb29eb