TITLE:
Linux Kernel Shared Memory Restrictions Bypass

SECUNIA ADVISORY ID:
SA19657

VERIFY ADVISORY:
http://secunia.com/advisories/19657/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
Local system

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/

DESCRIPTION:
A vulnerability has been reported in Linux Kernel, which can be
exploited by malicious, local users to bypass certain security
restrictions.

The vulnerability is caused due to the "mprotect()" function giving
write permissions to read-only attachments of shared memory
regardless of the permissions given by IPC.

SOLUTION:
Update to version 2.6.16.7.

PROVIDED AND/OR DISCOVERED BY:
Hugh Dickins

ORIGINAL ADVISORY:
Kernel.org:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.6
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.7

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