CVE-2026-64029
kernel: ALSA: seq: Serialize UMP output teardown with event_input
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 29, 2026
Description
A flaw was found in the Advanced Linux Sound Architecture (ALSA) sequencer component of the Linux kernel. This vulnerability, a use-after-free, occurs because of improper synchronization when handling Universal MIDI Packet (UMP) output. A local attacker could exploit this by creating a specific timing issue, which may lead to a system crash, resulting in a denial of service, or potentially allow for increased privileges on the system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-364 · Signal Handler Race Condition