CVE-2005-2456

Array index overflow in the xfrm_sk_policy_insert function in xfrm_user.c in Linux kernel 2.6 allows local users to cause a denial of service (oops or deadlock) and possibly execute arbitrary code via a p->dir value that is larger than XFRM_POLICY_OUT, which is used as an index in the sock->sk_policy array.

Weakness

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Software

Name	Vendor	Start Version	End Version
Linux_kernel	Linux	2.6.0 (including)	2.6.0 (including)
Red Hat Enterprise Linux 3	RedHat	kernel-0:2.4.21-37.EL	*
Red Hat Enterprise Linux 4	RedHat	kernel-0:2.6.9-22.EL	*
Kernel-source-2.4.27	Ubuntu	dapper	*
Kernel-source-2.4.27	Ubuntu	edgy	*
Linux-source-2.6.15	Ubuntu	dapper	*
Linux-source-2.6.17	Ubuntu	edgy	*

Extended Description

Locking is a type of synchronization behavior that ensures that multiple independently-operating processes or threads do not interfere with each other when accessing the same resource. All processes/threads are expected to follow the same steps for locking. If these steps are not followed precisely - or if no locking is done at all - then another process/thread could modify the shared resource in a way that is not visible or predictable to the original process. This can lead to data or memory corruption, denial of service, etc.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2005-2456
CWE	https://cwe.mitre.org/data/definitions/667.html

Improper Locking

Weakness

Affected Software

Extended Description

Potential Mitigations

References

CVE-2005-2456

Improper Locking

Weakness

Affected Software

Extended Description

Potential Mitigations

Related Attack Patterns

References