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.

CVSS v2.0 6.2 MEDIUM

6.2^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 1.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity HIGH

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://www.openwall.com/lists/oss-security/2014/07/24/2	Mailing List Third Party Advisory
https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212	Exploit Patch Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=295dc39d941dc2ae53d5c170365af4c9d5c16212	Exploit Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1122472	Issue Tracking Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8	Patch Third Party Advisory Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-0062.html	Third Party Advisory
http://www.securityfocus.com/bid/68862	Third Party Advisory VDB Entry
http://secunia.com/advisories/60353	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux_eus:6.5:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:6.5:::::::*

Information

Published : 2014-08-01 04:13

Updated : 2020-08-14 11:11

NVD link : CVE-2014-5045

Mitre link : CVE-2014-5045

JSON object : View

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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Products Affected

redhat

enterprise_linux_server_tus
enterprise_linux_server_aus
enterprise_linux_eus

linux

linux_kernel

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