CVE-2007-3731

CVE Details

Release Date:	2007-09-17
Impact:	Moderate	What is this?

Description

The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function.

See more information about CVE-2007-3731 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	4.9
Vector String:	AV:L/AC:L/Au:N/C:N/I:N/A:C
Version:	2.0
Attack Vector:	Local
Attack Complexity:	Low
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle Linux version 5 (kernel)	ELSA-2007-0940	2007-10-23
Oracle Linux version 5 (ocfs2-2.6.18-8.1.15.0.1.el5)	ELSA-2007-0940	2007-10-23
Oracle Linux version 5 (oracleasm-2.6.18-8.1.15.0.1.el5)	ELSA-2007-0940	2007-10-23