PT-2010-4435 · Linux · Linux Kernel

Eugene Teo + 1 · Published 2010-09-08 · Updated 2020-08-11 · CVE-2010-2960

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.35.4

Description The issue is related to the keyctl session to parent function in the Linux kernel, which expects a certain parent session keyring to exist. This expectation can be exploited by local users to cause a denial of service, resulting in a NULL pointer dereference and system crash, or possibly have other unspecified impacts. This can be achieved via a KEYCTL SESSION TO PARENT argument to the keyctl function.

Recommendations For Linux kernel versions prior to 2.6.35.4, consider upgrading to a newer version to resolve the issue. As a temporary workaround, restrict the use of the keyctl function with the KEYCTL SESSION TO PARENT argument to minimize the risk of exploitation.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2010-2960

Affected Products

Linux Kernel

References · 12

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=627440 · Exploit
• http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html · Vendor Advisory
• http://ubuntu.com/usn/USN-1000-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2010-2960 · Security Note
• http://securityfocus.com/bid/42932 · Note
• http://vupen.com/english/advisories/2011/0298 · Note
• http://secunia.com/advisories/41263 · Note
• http://securitytracker.com/id?1024384 · Note
• http://twitter.com/taviso/statuses/22777866582 · Note
• http://openwall.com/lists/oss-security/2010/09/02/1 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/61557 · Note