SB2012080902 - Buffer overflow in Linux kernel
Published: August 9, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012080902
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) Buffer overflow (CVE-ID: CVE-2012-2745)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The copy_creds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement session keyring to a child process, which allows local users to cause a denial of service (panic) via a crafted application that uses the fork system call.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=79549c6dfda0603dba9a70a53467ce62d9335c33
- http://rhn.redhat.com/errata/RHSA-2012-1064.html
- http://secunia.com/advisories/50633
- http://secunia.com/advisories/50853
- http://secunia.com/advisories/50961
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.2
- http://www.securityfocus.com/bid/54365
- http://www.securitytracker.com/id?1027236
- http://www.ubuntu.com/usn/USN-1567-1
- http://www.ubuntu.com/usn/USN-1597-1
- http://www.ubuntu.com/usn/USN-1606-1
- https://bugzilla.redhat.com/show_bug.cgi?id=833428
- https://github.com/torvalds/linux/commit/79549c6dfda0603dba9a70a53467ce62d9335c33