SB2010090808 - Null pointer dereference in Linux kernel
Published: September 8, 2010
Security Bulletin ID
SB2010090808
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Null pointer dereference (CVE-ID: CVE-2010-2960)
The vulnerability allows a local user to execute arbitrary code.
The keyctl_session_to_parent function in security/keys/keyctl.c in the Linux kernel 2.6.35.4 and earlier expects that a certain parent session keyring exists, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://secunia.com/advisories/41263
- http://securitytracker.com/id?1024384
- http://twitter.com/taviso/statuses/22777866582
- http://www.openwall.com/lists/oss-security/2010/09/02/1
- http://www.securityfocus.com/bid/42932
- http://www.ubuntu.com/usn/USN-1000-1
- http://www.vupen.com/english/advisories/2011/0298
- https://bugzilla.redhat.com/show_bug.cgi?id=627440
- https://exchange.xforce.ibmcloud.com/vulnerabilities/61557