Buffer overflow in the xfs_readlink function in fs/xfs/xfs_vnodeops.c in XFS in the Linux kernel 2.6, when CONFIG_XFS_DEBUG is disabled, allows local users to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via an XFS image containing a symbolic link with a long pathname.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2011/10/26/1 | mailing list third party advisory patch |
| https://bugzilla.redhat.com/show_bug.cgi?id=749156 | issue tracking third party advisory patch |
| http://www.openwall.com/lists/oss-security/2011/10/26/3 | mailing list third party advisory patch |
| http://xorl.wordpress.com/2011/12/07/cve-2011-4077-linux-kernel-xfs-readlink-memory-corruption/ | third party advisory exploit |
| http://oss.sgi.com/archives/xfs/2011-10/msg00345.html | mailing list third party advisory patch |
| http://secunia.com/advisories/48964 | third party advisory broken link |
| http://marc.info/?l=bugtraq&m=139447903326211&w=2 | mailing list third party advisory vendor advisory |