An issue was discovered in the Linux kernel before 4.20.2.

published 2019-09-04 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6831

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits: 0; none known

An issue was discovered in the Linux kernel before 4.20.2. An out-of-bounds access exists in the function build_audio_procunit in the file sound/usb/mixer.c.

Patch / fix

fixed in 1 distros 5 links 1

linux linux_kernel 3.16.66, 3.18.132, 4.4.170, 4.9.150, 4.14.93, 4.19.15, 4.20.2

debian ubuntu red hat suse opensuse

linux Debian 14, Debian 13, Debian 12 4.19.16-1

debian advisories DEBIAN-CVE-2019-15927

linux Ubuntu 16.04 LTS 4.4.0-143.169
linux Ubuntu 18.04 LTS 4.15.0-60.67
linux-aws Ubuntu 14.04 LTS 4.4.0-1039.42
linux-aws Ubuntu 16.04 LTS 4.4.0-1077.87
linux-aws Ubuntu 18.04 LTS 4.15.0-1047.49
linux-gcp Ubuntu 16.04 LTS 4.15.0-1041.43
linux-gcp Ubuntu 18.04 LTS 4.15.0-1042.45
linux-hwe Ubuntu 16.04 LTS 4.15.0-60.67~16.04.1

ubuntu advisories UBUNTU-CVE-2019-15927

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 8 4.18.0-147.el8
perf RHEL 8 4.18.0-147.el8
bpftool RHEL 8 4.18.0-147.el8
kernel-core RHEL 8 4.18.0-147.el8
kernel-tools RHEL 8 4.18.0-147.el8
python3-perf RHEL 8 4.18.0-147.el8
kernel-modules RHEL 8 4.18.0-147.el8
kernel-zfcpdump RHEL 8 4.18.0-147.el8

red hat advisories RHSA-2019:3517 RHSA-2019:2029

kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.125.1
kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.125.1
kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.125.1
kgraft-patch-SLE12-SP2_Update_33 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 1-3.5.1
kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.107.1
kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.107.1
kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +5 more 4.4.180-94.107.1
kgraft-patch-SLE12-SP3_Update_29 SLES for SAP 12 SP3, SLES 12 SP3-LTSS, OpenStack Cloud Crowbar 8 +3 more 1-4.3.1

suse advisories SUSE-SU-2019:2984-1 SUSE-SU-2019:2949-1 SUSE-SU-2019:14218-1 SUSE-SU-2019:2950-1 SUSE-SU-2019:2756-1 SUSE-SU-2019:2738-1

kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-vanilla openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-kvmsmall openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-obs-build openSUSE Leap 15.1 4.12.14-lp151.28.16.1
kernel-syms openSUSE Leap 15.0 4.12.14-lp150.12.73.1

opensuse advisories openSUSE-SU-2019:2181-1 openSUSE-SU-2019:2173-1

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f43… commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-15927 updated 2026-11-05 cvss 7.8

kernel: out-of-bounds in function build_audio_procunit in sound/usb/mixer.c

Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
affected: workaround, no fix planned “Out of support scope”
Red Hat Enterprise Linux 7 perf, kernel, kernel-rt, kernel-alt, python-perf, kernel-kdump, +8 more
affected: workaround, no fix available, no fix planned “Will not fix”
Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more
affected: workaround, no fix available
Red Hat Enterprise MRG 2 kernel
affected: workaround, no fix planned “Will not fix”
Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-147.el8, kernel-debuginfo-common-aarch64 4.18.0-147.el8, kernel-debuginfo-common-ppc64le 4.18.0-147.el8 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-147.el8, kernel 4.18.0-147.el8, bpftool 4.18.0-147.el8, kernel-core 4.18.0-147.el8, kernel-tools 4.18.0-147.el8, python3-perf 4.18.0-147.el8, +15 more
fixed: vendor fix RHSA-2019:3517
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, kernel-tools-libs 3.10.0-1062.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, kernel-tools-libs 3.10.0-1062.el7, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.el7 Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-kdump 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1062.el7, kernel-debuginfo-common-x86_64 3.10.0-1062.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.el7

+2 more productsfewer

Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, kernel-tools-libs 3.10.0-1062.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.el7

fixed: vendor fix RHSA-2019:2029
Red Hat Enterprise Linux 5 kernel
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-125 Out-of-bounds Read

Technology feeds

Linux kernel rss critical rss

References

git.kernel.org /pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4351a199cc120ff9d59e06d02e8657d08e6cc46
mailing-list, patch, vendor-advisory
lists.opensuse.org /opensuse-security-announce/2019-09/msg00064.html
vendor-advisory, mailing-list, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2019-09/msg00066.html
vendor-advisory, mailing-list, third-party-advisory
cdn.kernel.org /pub/linux/kernel/v4.x/ChangeLog-4.20.2
mailing-list, vendor-advisory
security.netapp.com /advisory/ntap-20191004-0001/
third-party-advisory

Sources

CVE List CVE-2019-15927
NVD CVE-2019-15927

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary