Null pointer dereference in Linux kernel - CVE-2010-2960
Published: September 8, 2010 / Updated: August 11, 2020
Vulnerability identifier: #VU92822
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2010-2960
CWE-ID: CWE-476
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 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.
How to mitigate CVE-2010-2960
Install update from vendor's repository.
Sources
- 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