National Vulnerability Database

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    Vulnerabilities Detail

CVE-2015-8839 Detail

Description

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.

Source:  MITRE
Description Last Modified:  05/02/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.1 MEDIUM
Vector: AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.4

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

CVSS v2.0 Severity and Metrics:

Base Score: 1.9 LOW
Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.4

Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
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=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/04/01/4
http://www.securityfocus.com/bid/85798
http://www.securitytracker.com/id/1035455
http://www.ubuntu.com/usn/USN-3005-1
http://www.ubuntu.com/usn/USN-3006-1
http://www.ubuntu.com/usn/USN-3007-1
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:2669
https://bugzilla.redhat.com/show_bug.cgi?id=1323577 Issue Tracking
https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b Vendor Advisory

Technical Details

Vulnerability Type (View All)

Change History

8 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-8839
NVD Published Date:
05/02/2016
NVD Last Modified:
01/04/2018