Description

The ext4_zero_range function in fs/ext4/extents.c in the Linux kernel before 4.1 allows local users to cause a denial of service (BUG) via a crafted fallocate zero-range request.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f2af21aae11972fa924374ddcf52e88347cf5a8

http://rhn.redhat.com/errata/RHSA-2015-1778.html

http://rhn.redhat.com/errata/RHSA-2015-1787.html

http://www.openwall.com/lists/oss-security/2015/02/23/14

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

http://www.securityfocus.com/bid/75139

http://www.securitytracker.com/id/1034454

http://www.spinics.net/lists/linux-ext4/msg47193.html

https://bugzilla.redhat.com/show_bug.cgi?id=1193907

https://github.com/torvalds/linux/commit/0f2af21aae11972fa924374ddcf52e88347cf5a8

https://support.f5.com/csp/article/K05211147

Details

Risk Information

CVSS v2