SB2009081903 - Improper privilege management in Linux kernel

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Main Vulnerability Database SB2009081903

SB2009081903 - Improper privilege management in Linux kernel

Published: August 19, 2009

Security Bulletin ID SB2009081903
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 privilege management (CVE-ID: CVE-2009-2848)

The vulnerability allows a local user to read and manipulate data.

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.


Remediation

Install update from vendor's website.

References