SB2009081404 - Use of uninitialized resource in Linux kernel

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Main Vulnerability Database SB2009081404

SB2009081404 - Use of uninitialized resource in Linux kernel

Published: August 14, 2009 Updated: August 10, 2024

Security Bulletin ID SB2009081404
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Use of uninitialized resource (CVE-ID: CVE-2009-2692)

The vulnerability allows a local user to execute arbitrary code.

The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.


Remediation

Install update from vendor's website.

References