What is CVE-2026-53276?

CVE-2026-53276 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-06-25.

How severe is CVE-2026-53276?

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

Use After Free in Linux

CVE-2026-53276

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer In iso_sock_rebind_bc(), the bis pointer is cached, then the socket lock is dropped: bis = iso_pi(sk)->conn…

Vulnerability class: Use-After-Free

EPSS: 0.001 (1.6th 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 d3413703d5f8b7d1e6f514f9440ed5da1bc30796, 6.19, 0
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-53276?: CVE-2026-53276 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-06-25.
How severe is CVE-2026-53276?: High severity. CVSS v3 base score is 7.8 out of 10.