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CVE-2018-7566

25
FAUCET Score

CVE-2018-7566 is a buffer overflow vulnerability in the Linux kernel 4.15, affecting various distributions including Canonical, Debian, Oracle, Red Hat, and SUSE. This flaw allows a local user to achieve high impact to confidentiality, integrity, and availability through a crafted SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to /dev/snd/seq. While rated as HIGH severity with a CVSS score of 7.8, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.15:*:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:a:suse:linux_enterprise_module_for_public_cloud:12:*:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_server:12:*:*:*:ltss:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 80th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-754.3.5.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-862.11.6.rt56.819.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-862.11.6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Extended Update SupportFixed in: kernel-0:3.10.0-693.50.3.el7
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-693.50.3.rt56.644.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2018-7566Moderate

kernel: race condition in snd_seq_write() may lead to UAF or OOB-access

Feb 14, 2018

References

lists.opensuse.org / opensuse-security-announce/2018-03/msg00067.html
Third Party Advisory
mailman.alsa-project.org / pipermail/alsa-devel/2018-February/132026.html
PatchThird Party Advisory
access.redhat.com / errata/RHSA-2018:2384
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2390
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2395
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2948
Third Party Advisory
access.redhat.com / errata/RHSA-2019:1483
access.redhat.com / errata/RHSA-2019:1487
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
git.kernel.org / pub/scm/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
help.ecostruxureit.com / display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/05/msg00000.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3631-1
Third Party Advisory
usn.ubuntu.com / 3631-2
Third Party Advisory
usn.ubuntu.com / 3798-1
Third Party Advisory
usn.ubuntu.com / 3798-2
Third Party Advisory
debian.org / security/2018/dsa-4187
Third Party Advisory
debian.org / security/2018/dsa-4188
Third Party Advisory
oracle.com / security-alerts/cpujul2020.html
oracle.com / technetwork/security-advisory/cpuapr2019-5072813.html
PatchThird Party Advisory
securityfocus.com / bid/103605
Third Party AdvisoryVDB Entry