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>> Linux Kernel "lease_init" and "setlease" Denial of Service and Slab Leak Issues
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Title : Linux Kernel "lease_init" and "setlease" Denial of Service and Slab Leak Issues
VUPEN ID : VUPEN/ADV-2006-1767
CVE ID : CVE-2006-1859 - CVE-2006-1860
Rated as : Low Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2006-05-11
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Two vulnerabilities have been identified in Linux Kernel, which could be exploited by local attackers to cause a denial of service or disclose sensitive information.
The first issue is due to an error in the "lease_init()" [fs/locks.c] function that incorrectly frees unallocated memory when handling an invalid "arg" argument, which could be exploited by malicious users to crash a vulnerable system.
The second issue is due to an uninitialised return value in "__setlease()", which could cause a slab leak.
Affected Products
Linux Kernel version 2.6.16.15 and prior
Solution
Upgrade to Linux Kernel version 2.6.16.16 :
http://www.kernel.org/
References
http://www.vupen.com/english/advisories/2006/1767
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.16
Credits
Vulnerabilities reported by Hokka Zakrisson and Björn Steinbrink
ChangeLog
2006-05-11 : Initial release
Vulnerability Management
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