CVE-2018-19824

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-03 · updated 2026-06-17
Weakness: CWE-416

Description

In the Linux kernel through 4.19.6, a local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 18.10
Debian Linux: 8.0
Linux kernel: through 4.19.6

References

http://www.securityfocus.com/bid/106109
https://access.redhat.com/errata/RHSA-2019:2703
https://bugzilla.suse.com/show_bug.cgi?id=1118152
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=5f8cf712582617d523120df67d392059eaf2fc4b
https://github.com/torvalds/linux/commit/5f8cf712582617d523120df67d392059eaf2fc4b
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
https://support.f5.com/csp/article/K98155950
https://usn.ubuntu.com/3879-1/
https://usn.ubuntu.com/3879-2/
https://usn.ubuntu.com/3930-1/

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