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CVE-2026-63948

Published Jul 19, 2026 EPSS 0.21% (11th pctl)

Overview

CVE-2026-63948 is a known-severity vulnerability. It was published on July 19, 2026.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn

__set_chan_timer() takes a l2cap_chan reference via l2cap_chan_hold()

before scheduling the delayed work. The normal path in

l2cap_chan_timeout() drops this reference with l2cap_chan_put() at the

end, but the early return when chan->conn is NULL skips the put,

leaking the reference.

Add the missing l2cap_chan_put() before the early return.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Ref git.kernel.org/stable/c/08d81fe96f80a8e20c7acb573b6a45d901fcf2cd Ref git.kernel.org/stable/c/107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f Ref git.kernel.org/stable/c/50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee Ref git.kernel.org/stable/c/63cd225cc13d782a85e2a73c04d0d350153eada1 Ref git.kernel.org/stable/c/8894c2010435a56ce7c6c2a8785860c13554df2f Ref git.kernel.org/stable/c/9dbd84990394c51f5cee1e8871bb5ff8af5ed939 Ref git.kernel.org/stable/c/b5c59a5b469e2a809a2d57eda4ded94235971060 Ref git.kernel.org/stable/c/e8a5baff5be273ca07771fd2b9bb1f2a4152917b

Frequently Asked Questions

What is CVE-2026-63948?

CVE-2026-63948 is a known-severity vulnerability. It was published on July 19, 2026.

How severe is CVE-2026-63948?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-63948?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-63948?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-63948 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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