arch/x86/kernel/ptrace.c in the Linux kernel before 220.127.116.11 on the x86_64 platform leaks task_struct references into the sys32_ptrace function, which allows local users to cause a denial of service (system crash) or have unspecified other impact via unknown vectors, possibly a use-after-free vulnerability.
CVSS Severity (version 2.0):
Impact Subscore: 6.9
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service
Official Statement from Red Hat (07/09/2008)
Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.
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[oss-security] 20080703 18.104.22.168 security fixes, please assign CVE id