Null pointer dereference in Linux kernel - CVE-2007-0006

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Main Vulnerability Database Vulnerabilities #VU95576

Null pointer dereference in Linux kernel - CVE-2007-0006

Published: February 6, 2007 / Updated: October 11, 2017


Vulnerability identifier: #VU95576
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2007-0006
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

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.


How to mitigate CVE-2007-0006

Install update from vendor's repository.

Sources