The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the semantics of rename_lock, which allows local users to cause a denial of service (deadlock and system hang) via a crafted application.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8559
Reference (s):
- BID:70854
- URL: http://www.securityfocus.com/bid/70854
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1159313
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=946e51f2bf37f1656916eb75bd0742ba33983c28