CVE-2009-2695

CVE Details

Release Date:	2009-08-28
Impact:	Important	What is this?

Description

The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointer dereference vulnerabilities, related to (1) the default configuration of the allow_unconfined_mmap_low boolean in SELinux on Red Hat Enterprise Linux (RHEL) 5, (2) an error that causes allow_unconfined_mmap_low to be ignored in the unconfined_t domain, (3) lack of a requirement for the CAP_SYS_RAWIO capability for these mmap operations, and (4) interaction between the mmap_min_addr protection mechanism and certain application programs.

See more information about CVE-2009-2695 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:	7.2
Vector String:	AV:L/AC:L/Au:N/C:C/I:C/A:C
Version:	2.0
Attack Vector:	Local
Attack Complexity:	Low
Authentication:	None
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle Linux version 5 (kernel)	ELSA-2009-1548	2009-11-03
Oracle Linux version 5 (ocfs2-2.6.18-164.6.1.0.1.el5)	ELSA-2009-1548	2009-11-03
Oracle Linux version 5 (oracleasm-2.6.18-164.6.1.0.1.el5)	ELSA-2009-1548	2009-11-03