National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2015-8953 Detail

Description

fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on a large file in a lower overlayfs layer.

Source:  MITRE
Description Last Modified:  10/16/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efab0a0ba01a74df782eb7fa44b044dae8b5 Exploit Patch Vendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.6 Release Notes Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/08/23/9 Exploit Third Party Advisory
http://www.securityfocus.com/bid/92611
https://bugzilla.redhat.com/show_bug.cgi?id=1367814 Issue Tracking Third Party Advisory VDB Entry
https://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8b5 Patch

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-8953
NVD Published Date:
10/16/2016
NVD Last Modified:
11/28/2016