CVE-2026-64405
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. https://security-tracker.debian.org/tracker/DSA-6405-1
CSIRTS triage
- What
- This vulnerability addresses a null pointer dereference in the hci_abort_conn function.
- Who is affected
- Deployments using the Bluetooth subsystem.
- Urgency
- Remediation is important to prevent potential crashes, although no exploitation has been reported.
- Action
- Apply the patch for CVE-2026-64405.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownDSA-6405-1 linux - security updatedebian · 2026-07-31
- unknownCVE-2026-64405: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: Fix n…nvd · 2026-07-25
- highCVE-2026-64405: Bluetooth: hci_conn: Fix null ptr deref in hci_abort_conn()msrc · 2026-07-14
External references
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