CVE-2026-64408
Linux kernel Bluetooth use-after-free in bnep L2CAP during netdev registration.
Is CVE-2026-64408 being exploited?
Not confirmed. CVE-2026-64408 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-64408?
CVE-2026-64408 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-64408?
Yes. A fix has been recorded for CVE-2026-64408. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64408 affect?
CVE-2026-64408 affects Linux kernel (Bluetooth bnep / bnep_add_connection), Linux distributions and devices with Bluetooth stacks. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64408?
Apply vendor/kernel security updates and reboot; disable Bluetooth if immediate patching is impossible.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Bluetooth-proximity use-after-free in kernel may cause panic (DoS) and could enable local privilege escalation or code execution.
Patch when possible
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < 390b5db3ff8745187f094c4e915663b7b1f98944
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < 46a88784c4c9b96954dd86f747ce93f65efa1302
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < 551ae773ec64045b4e72099132654887e0270bcc
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < ae215c5b6422d8eda443b861b124bd1be6969c31
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < df22adc7eafc22e651561813c11dc51a796b12ee
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < a6b22dbd80926556290ad2243be25218d6956a19
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < 563a8573047182f550b1e1e030615755cd8c41da
- affected>= 65f53e9802dbfae0e5758a91793c3f5f8bece49b and < bb067a99a0356196c0b89a95721985485ebce5a5
- affected3.13
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.