Vulnerability Monitor

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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.

Published

2014-08-01T11:13:09.460

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.2 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

1.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-59

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 3.15.8	Yes
Operating System	redhat	enterprise_linux_eus	6.5	Yes
Operating System	redhat	enterprise_linux_server_aus	6.5	Yes
Operating System	redhat	enterprise_linux_server_tus	6.5	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212 ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-0062.html Third Party Advisory ([email protected])
http://secunia.com/advisories/60353 Third Party Advisory ([email protected])
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8 Patch, Third Party Advisory, Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2014/07/24/2 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/68862 Third Party Advisory, VDB Entry ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1122472 Issue Tracking, Third Party Advisory ([email protected])
https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212 Exploit, Patch, Third Party Advisory ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212 (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-0062.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/60353 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8 Patch, Third Party Advisory, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2014/07/24/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/68862 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1122472 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212 Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)