Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2009-2848

Severity CVSS v4.0:
Pending analysis
Type:
CWE-269 Improper Privilege Management
Publication date:
18/08/2009
Last modified:
09/04/2025

Description

The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit.

Impact

Vector 2.0
AV:L/AC:M/Au:N/C:P/I:P/A:C CVSS v2.0 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Complete

Base Score 2.0
5.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 2.6.29.5 (including)
cpe:2.3:o:linux:linux_kernel:2.6.30:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc6:*:*:*:*:*:*
cpe:2.3:o:novell:linux_desktop:9:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:11.0:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:10:sp2:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:10:sp2:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools