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CVE-2016-2546

20
FAUCET Score

CVE-2016-2546 is a denial-of-service vulnerability affecting the Linux kernel (versions prior to 4.4.1) due to an incorrect mutex type in sound/core/timer.c. This allows local users to trigger a race condition, leading to a use-after-free and system crash via a crafted ioctl call. The vulnerability has a CVSS score of 5.1 (Medium), indicating a local attack vector with high attack complexity and a high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.1MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.4
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 29th percentile among its peer group of 1,595 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2016-2546Moderate

kernel: sound: GPF in snd_timer_user_params

Jan 19, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Patch
lists.opensuse.org / opensuse-security-announce/2016-03/msg00094.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00045.html
lists.opensuse.org / opensuse-security-announce/2016-08/msg00038.html
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/af368027a49a751d6ff4ee9e3f9961f35bb4fede
Patch
debian.org / security/2016/dsa-3503
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.4.1
PatchVendor Advisory
openwall.com / lists/oss-security/2016/01/19/1
Patch
securityfocus.com / bid/83384
securitytracker.com / id/1035301
ubuntu.com / usn/USN-2929-1
ubuntu.com / usn/USN-2929-2
ubuntu.com / usn/USN-2930-1
ubuntu.com / usn/USN-2930-2
ubuntu.com / usn/USN-2930-3
ubuntu.com / usn/USN-2931-1
ubuntu.com / usn/USN-2932-1
ubuntu.com / usn/USN-2967-1
ubuntu.com / usn/USN-2967-2