What is CVE-2026-53286?

CVE-2026-53286 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2026-06-26.

How severe is CVE-2026-53286?

High severity. CVSS v3 base score is 7.8 out of 10.

Double Free in Linux

CVE-2026-53286

In the Linux kernel, the following vulnerability has been resolved: idpf: fix double free and use-after-free in aux device error paths When auxiliary_device_add() fails in idpf_plug_vport_aux_dev() or idpf_plug_core_aux_dev(), the err_au…

Vulnerability class: Double Free

EPSS: 0.001 (2.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions f4312e6bfa2a98e94dacc75f96f916b76bdf4259, 6.17, 0
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-415 — Double Free

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-53286?: CVE-2026-53286 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2026-06-26.
How severe is CVE-2026-53286?: High severity. CVSS v3 base score is 7.8 out of 10.