CVE-2006-5173

medium

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.

References

http://www.ubuntu.com/usn/usn-395-1

http://www.securityfocus.com/bid/21851

http://www.securityfocus.com/archive/1/471457

http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826

Details

Source: Mitre, NVD

Published: 2006-10-17

Updated: 2023-11-07

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium