Is CVE-2026-53251 in the CISA KEV catalog?

No. CVE-2026-53251 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-53251?

CVE-2026-53251 has an EPSS score of 0.18% (7th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-53251?

Upgrade linux on debian 13 to 6.12.94-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-53251

UNSCORED

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync hci_get_route() returns a reference-counted hci_dev pointer via hci_dev_hold(). The function exits normally or with an error without ever releasing it.

How to fix

Remediation Available

linuxDebian

Fixed in:6.12.94-1CVE-2026-53251

Fixed in:7.0.13-1CVE-2026-53251

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.18%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Other references4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-30.