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…
Does this matter?
Lower severity and a low EPSS score (0.49%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 6.2 MEDIUMAV:L/AC:H/Au:N/C:C/I:C/A:C
- EPSS
- 0.49% probability · 41th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- linux/linux kernel · redhat/enterprise linux eus · redhat/enterprise linux server aus · redhat/enterprise linux server tus
- Source
- cve@mitre.org
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.htmlThird Party Advisory
- http://secunia.com/advisories/60353Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8Patch, Third Party Advisory, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2014/07/24/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/68862Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1122472Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212Exploit, Patch, Third Party Advisory
- 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.htmlThird Party Advisory
- http://secunia.com/advisories/60353Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8Patch, Third Party Advisory, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2014/07/24/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/68862Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1122472Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.