CVE-2006-5173

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

17/10/2006

Last modified:

23/04/2026

Description

Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.

Impact

Vector 2.0

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

Base Score: 2.10 LOW
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

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

Base Score 2.0

2.10

Severity 2.0

LOW

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	2.4.0 (including)	2.6.19 (including)
cpe:2.3:o:canonical:ubuntu_linux:5.10:::::::*
cpe:2.3:o:canonical:ubuntu_linux:6.06:::::::*
cpe:2.3:o:canonical:ubuntu_linux:6.10:::::::*

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

CVE-2006-5173

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools