Secunia Security Advisory - A vulnerability has been reported in the Linux kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service).
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TITLE:
Linux Kernel "fcntl_setlk()" SMP Reordered Access Vulnerability
SECUNIA ADVISORY ID:
SA30101
VERIFY ADVISORY:
http://secunia.com/advisories/30101/
CRITICAL:
Not critical
IMPACT:
DoS
WHERE:
Local system
OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/
DESCRIPTION:
A vulnerability has been reported in the Linux kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).
The vulnerability is caused due to an error when preventing race
conditions between "fcntl_setlk()" and "close()" calls on SMP
systems. This can be exploited to trigger the improper, reordered
access to the file descriptor table and the "file_lock" structure of
an inode, between threads running on different CPUs.
The vulnerability is reported in versions prior to 2.6.25.2.
SOLUTION:
Update to version 2.6.25.2.
PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.
ORIGINAL ADVISORY:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.2
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About:
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