CVE-2016-2547

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Summary

CVECVE-2016-2547
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-04-27 17:59:17 UTC
Updated2026-05-06 22:30:45 UTC
Descriptionsound/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.

Risk And Classification

Primary CVSS: v3.0 5.1 MEDIUM from [email protected]

CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-362 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.1MEDIUMCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary4.7AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - Security bugs in Linux kernel sound subsystem af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Patch
1311566 – (CVE-2016-2547) CVE-2016-2547 kernel: sound: use-after-free in snd_timer_user_ioctl af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
USN-2929-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2930-2: Linux kernel (Wily HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2932-1: Linux kernel (Vivid HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
Linux Kernel CVE-2016-2547 Multiple Local Denial of Service Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
[security-announce] SUSE-SU-2016:2074-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
USN-2929-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
Linux Kernel Sound Driver snd_timer_close() Lets Local Users Cause Denial of Service Conditions on the Target System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
USN-2930-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
Debian -- Security Information -- DSA-3503-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch, Vendor Advisory
USN-2967-2: Linux kernel (OMAP4) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
[security-announce] SUSE-SU-2016:0911-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
USN-2930-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2931-1: Linux kernel (Utopic HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
[security-announce] SUSE-SU-2016:1102-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
USN-2967-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1 af854a3a-2127-422b-91ae-364da2661108 www.kernel.org
ALSA: timer: Harden slave timer list handling · torvalds/linux@b5a663a · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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