Improper resource shutdown or release in Linux kernel - CVE-2026-72144

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Main Vulnerability Database Vulnerabilities #VU143440

Improper resource shutdown or release in Linux kernel - CVE-2026-72144

Published: August 16, 2026


Vulnerability identifier: #VU143440
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72144
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in dell_init() in the dell-laptop driver when handling initialization errors after resource registration. A local user can trigger an initialization failure path to cause a denial of service.

The issue occurs after rfkill setup when later LED or backlight registration fails, leaving the notifier, debugfs directory, keyboard backlight LED, or optional touchpad LED registered despite initialization failure.


Affected software

Linux kernel
Ubuntu
linux-gcp-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)

How to mitigate CVE-2026-72144

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1

External References

Related Security Bulletins