CVE-2014-5045
The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program.
View on NVDSeverity
N/A
EPSS
Probability of exploitation (next 30 days): 0.0003 (0.0%)
Percentile: 8.1%
EPSS: 2026-05-06
Affects
linux:linux_kernelredhat:enterprise_linux_eusredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_tusTechnical description
The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program.
Published: 8/1/2014, 11:13:09 AM
Last modified: 5/6/2026, 10:30:45 PM
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212
- http://rhn.redhat.com/errata/RHSA-2015-0062.html
- http://secunia.com/advisories/60353
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8
- http://www.openwall.com/lists/oss-security/2014/07/24/2
- http://www.securityfocus.com/bid/68862
- https://bugzilla.redhat.com/show_bug.cgi?id=1122472
- https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212