CVE-2026-64178
Linux kernel Bluetooth bnep use-after-free allowing kernel memory corruption/DoS.
Is CVE-2026-64178 being exploited?
Not confirmed. CVE-2026-64178 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 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-64178?
CVE-2026-64178 is rated High. 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-2026-64178?
Yes. A fix has been recorded for CVE-2026-64178. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64178 affect?
CVE-2026-64178 affects Linux kernel (Bluetooth bnep subsystem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64178?
Apply kernel security updates, restrict CAP_NET_ADMIN, reboot affected hosts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local attacker with CAP_NET_ADMIN can trigger a use-after-free in bnep leading to kernel crash (DoS) or memory corruption; race needed for further exploitation.
Patch when possible
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < a75bbcb10cb21acc169b785e9804f57d97873a9c
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 4907596f25b1720fa948371ac5f6c1f8da10a5bc
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 915a92182e2cda9cd7d2479020a44c6eda986f7c
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < fe69f634b076ae3ca81c5a5b845d9bba527036f7
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < b21805258d7e926adfd455fc820a447b90da3b82
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 5506aec795135cdd4cbf4e845929155663b25055
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < e7578529b97e5d4e439cf8f3e637c2303015338f
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 59e932ded949fa6f0340bf7c6d7818f962fa4fd2
- affected2.6.12
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.