SB2007020602 - Null pointer dereference in Linux kernel

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Main Vulnerability Database SB2007020602

SB2007020602 - Null pointer dereference in Linux kernel

Published: February 6, 2007

Security Bulletin ID SB2007020602
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) Null pointer dereference (CVE-ID: CVE-2007-0006)

The vulnerability allows a local user to perform service disruption.

The key serial number collision avoidance code in the key_alloc_serial function in Linux kernel 2.6.9 up to 2.6.20 allows local users to cause a denial of service (crash) via vectors that trigger a null dereference, as originally reported as 'spinlock CPU recursion.' The scheme for selecting serial numbers was changed from incrementing a counter to random number selection, increasing the likelihood of a serial number collision.


Remediation

Install update from vendor's website.

References