Double free in Linux kernel - CVE-2026-53286
Published: June 29, 2026
Vulnerability identifier: #VU135747
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53286
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to double free and use-after-free in idpf auxiliary device error paths when handling auxiliary device add failures. A local user can trigger a failure during auxiliary device initialization to cause a denial of service.
The issue occurs in the probe error paths of idpf_plug_vport_aux_dev() and idpf_plug_core_aux_dev().
How to mitigate CVE-2026-53286
Install security update from vendor's repository.