The cipso_v4_validate function in net/ipv4/cipso_ipv4.c in the Linux kernel before 3.4.8 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via an IPOPT_CIPSO IP_OPTIONS setsockopt system call.
"This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 6."
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 2.7
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
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[oss-security] 20130219 Re: CVE request -- Linux kernel: net: CIPSO_V4_TAG_LOCAL tag NULL pointer dereference