What’s Vulnerable › Vulnerabilities

CVE-2014-5045

• Severity: medium (CVSS 6.2 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2014-08-01 · updated 2026-06-17
• Weakness: CWE-59

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.

Affected products

• Linux kernel: before 3.15.8 — fixed in 3.15.8
• RedHat Enterprise Linux Eus: 6.5
• RedHat Enterprise Linux Server Aus: 6.5
• RedHat Enterprise Linux Server Tus: 6.5

How to fix

Upgrade to a fixed version: Linux kernel 3.15.8. Check the vendor advisory for mitigations.

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
• 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

Get alerted when CVE-2014-5045 or the next vulnerability affects your stack