CVE-2016-2547

MEDIUM

Linux Kernel < 4.4 - Denial of Service via Race Condition in Timer Ioctl

Title source: llm
STIX 2.1

Description

sound/core/timer.c in the Linux kernel before 4.4.1 employs a locking approach that does not consider slave timer instances, which allows local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call.

References (20)

Core 20
Core References
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2930-1
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2967-1
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1311566
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2930-2
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3503
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/83378
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2967-2
Patch mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/01/19/1
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2930-3
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2929-1
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2932-1
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035298
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2931-1
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2929-2

Scores

CVSS v3 5.1
EPSS 0.0034
EPSS Percentile 25.5%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-362
Status published
Products (1)
linux/linux_kernel < 4.4
Published Apr 27, 2016
Tracked Since Feb 18, 2026