SB20260816209 - Double free in Linux kernel core

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Main Vulnerability Database SB20260816209

SB20260816209 - Double free in Linux kernel core

Published: August 16, 2026

Security Bulletin ID SB20260816209
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Double free (CVE-ID: CVE-2026-74502)

CWE-ID: CWE-415 - Double Free

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to double free in snd_ump_attach_legacy_rawmidi() and snd_ump_endpoint_free() when enumerating a USB MIDI 2.0 (UMP) device that causes snd_rawmidi_new() to fail. An attacker with physical access can connect a crafted USB device to trigger the double free and cause a denial of service.

The issue is reached during device enumeration and later endpoint teardown.


Remediation

Install update from vendor's website.

References