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CVE-2016-2547

19
FAUCET Score

CVE-2016-2547 is a denial-of-service vulnerability affecting the Linux kernel prior to version 4.4.1, specifically within the sound/core/timer.c component. It stems from a race condition and use-after-free error due to an inadequate locking mechanism for slave timer instances. This flaw carries a CVSS v3 score of 5.1 (Medium), indicating a local attacker with low attack complexity can trigger a system crash. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this vulnerability.

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 (3)

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

Vendor Advisories (1)

redhatCVE-2016-2547Moderate

kernel: sound: use-after-free in snd_timer_user_ioctl

Jan 19, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
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/b5a663aa426f4884c71cd8580adae73f33570f0d
PatchVendor Advisory
debian.org / security/2016/dsa-3503
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.4.1
openwall.com / lists/oss-security/2016/01/19/1
Patch
securityfocus.com / bid/83378
securitytracker.com / id/1035298
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