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CVE-2016-2543

20
FAUCET Score

CVE-2016-2543 describes a denial-of-service vulnerability in the Linux kernel, specifically within the snd_seq_ioctl_remove_events function, affecting versions prior to 4.4.1. A local attacker can trigger a NULL pointer dereference and system crash (OOPS) by sending a crafted ioctl call due to improper FIFO assignment verification. This vulnerability has a CVSS v3 score of 6.2 (Medium), indicating a local attack vector with low complexity and high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding 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

6.2MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 77th percentile among its peer group of 3,050 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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-2016-2543Low

kernel: sound: GPF in snd_seq_fifo_clear

Jan 19, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Vendor 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/030e2c78d3a91dd0d27fef37e91950dde333eba1
PatchVendor Advisory
debian.org / security/2016/dsa-3503
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.4.1
Vendor Advisory
openwall.com / lists/oss-security/2016/01/19/1
securityfocus.com / bid/83377
securitytracker.com / id/1035304
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