A weakness and a vulnerability have been reported in the Linux Kernel, which can be exploited by malicious, local users to disclose certain system and potentially sensitive information.
1) The "xfs_ioc_fsgetxattr()" function in fs/xfs/linux-2.6/xfs_ioctl.c does not properly initialize all members of a certain structure before copying it to userspace, which can be exploited to disclose kernel stack memory by sending XFS_IOC_FSGETXATTR IOCTLs.
2) An integer overflow error within the "do_io_submit()" function in fs/aio.c can be exploited to disclose potentially sensitive memory areas.
Solution: Update to version 2.6.36.
Provided and/or discovered by: 1) Dan Rosenberg
2) Tavis Ormandy
Original Advisory: 1) http://www.linux.sgi.com/cgi-bin/mesg.cgi?a=xfs-masters&i=AANLkTi%3DHdtMVJk7rCf89zirUcyn-5qc%2B50soVt%3D7dE6t%40mail.gmail.com
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Subject: Linux Kernel Memory Leak and Integer Overflow Vulnerability
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