National Vulnerability Database

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    Vulnerabilities Detail

CVE-2015-4170 Detail

Description

Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.

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

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 4.7 MEDIUM
Vector: AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.0

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

CVSS v2.0 Severity and Metrics:

Base Score: 4.7 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.4

Access Vector (AV): Local
Access Complexity (AC): Medium
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=cf872776fc84128bb779ce2b83a37c884c3203ae Vendor Advisory
http://www.openwall.com/lists/oss-security/2015/05/26/1
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/74820
https://access.redhat.com/errata/RHSA-2016:1395 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1218879 Issue Tracking VDB Entry
https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae
https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz Patch

Technical Details

Vulnerability Type (View All)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-4170
NVD Published Date:
05/02/2016
NVD Last Modified:
11/11/2017