What is CVE-2023-53386?

CVE-2023-53386 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2025-09-18.

How severe is CVE-2023-53386?

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

Use After Free in Linux

CVE-2023-53386

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix potential use-after-free when clear keys Similar to commit c5d2b6fa26b5 ("Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk"). We can not access k after kfree_rcu() call.

Vulnerability class: Use-After-Free

EPSS: 0.001 (3.7th 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 d7d41682efc25d58b5bd8b80e85e3c9ce586635c, 5.7, 0
Linux Linux_kernel

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2023-53386?: CVE-2023-53386 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2025-09-18.
How severe is CVE-2023-53386?: High severity. CVSS v3 base score is 7.8 out of 10.