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>> Linux Kernel Denial of Service and Information Disclosure Vulnerabilities
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Multiple vulnerabilities have been identified in Linux Kernel, which could be exploited by local attackers to disclose sensitive information or cause a denial of service.
The first issue is due to an error in the "nfs_get_user_pages()" [direct.c] function that does not properly validate certain values sent via the "get_user_pages()" function, which could be exploited by malicious users to cause a denial of service via an "O_DIRECT" write.
The second vulnerability is due to an error in the XFS "ftruncate()" function, which could expose stale data off disk to local users.
The third vulnerability is due to an error when handling bad elf entry addresses, which could be exploited by local attackers to cause an endless recursive fault on Intel systems, creating a denial of service condition.
Affected Products
Linux Kernel versions prior to 2.6.15.5
Solution
Upgrade to Linux Kernel version 2.6.15.5 :
http://www.kernel.org/
References
http://www.vupen.com/english/advisories/2006/0804
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.15.5
Credits
Vulnerabilities reported by the vendor
ChangeLog
2006-03-02 : Initial release
Vulnerability Management
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