SB2006101801 - Improper input validation in Linux kernel

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Main Vulnerability Database SB2006101801

SB2006101801 - Improper input validation in Linux kernel

Published: October 18, 2006

Security Bulletin ID SB2006101801
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper input validation (CVE-ID: CVE-2006-5173)

The vulnerability allows a local user to perform service disruption.

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.


Remediation

Install update from vendor's website.

References