CVE-2009-4131 Information

Description

The EXT4_IOC_MOVE_EXT (aka move extents) ioctl implementation in the ext4 filesystem in the Linux kernel before 2.6.32-git6 allows local users to overwrite arbitrary files via a crafted request related to insufficient checks for file permissions.

Reference

http://git.kernel.org/?p=linux/kernel/git/tytso/ext4.git;a=commit;h=4a58579b9e4e2a35d57e6c9c8483e52f6f1b7fd6 http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html http://lkml.org/lkml/2009/12/9/255 http://secunia.com/advisories/37658 http://secunia.com/advisories/37686 http://secunia.com/advisories/38017 http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log http://www.mandriva.com/security/advisories?name=MDVSA-2009:329 http://www.securityfocus.com/bid/37277 http://www.theregister.co.uk/2009/12/11/linux_kernel_bugs_patched/ http://www.ubuntu.com/usn/USN-869-1 http://www.vupen.com/english/advisories/2009/3468 https://bugzilla.redhat.com/show_bug.cgi?id=544471 https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00702.html