CVE-2014-5045

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Summary

CVECVE-2014-5045
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-08-01 11:13:09 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 6.2 from [email protected]

AV:L/AC:H/Au:N/C:C/I:C/A:C

Problem Types: CWE-59 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:H/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Redhat Enterprise Linux Eus 6.5 All All All
Operating System Redhat Enterprise Linux Server Aus 6.5 All All All
Operating System Redhat Enterprise Linux Server Tus 6.5 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
fs: umount on symlink leaks mnt count · torvalds/linux@295dc39 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Patch, Third Party Advisory
Security Advisory SA60353 - Linux Kernel "mountpoint_last()" Vulnerability - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
Bug 1122472 – CVE-2014-5045 kernel: vfs: refcount issues during unmount on symlink af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8 af854a3a-2127-422b-91ae-364da2661108 www.kernel.org Patch, Third Party Advisory, Vendor Advisory
git.kernel.org af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
Linux Kernel CVE-2014-5045 Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
oss-security - Re: CVE request: kernel: vfs: refcount issues during unmount on symlink af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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