Core OS kernel vulnerability; Linux kernel Bluetooth used widely across industries; could disrupt services if exploited.
CVE-2026-43322
Linux kernel Bluetooth UAF in le_read_features_complete fixed.
Is CVE-2026-43322 being exploited?
Not confirmed. CVE-2026-43322 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 0.22% probability of exploitation in the next 30 days.
How severe is CVE-2026-43322?
CVE-2026-43322 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-2026-43322?
Yes. A fix has been recorded for CVE-2026-43322. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43322 affect?
CVE-2026-43322 affects Linux kernel. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43322?
Update to patched kernel release; reboot; verify Bluetooth stack.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Kernel memory corruption via Bluetooth HCI could crash or compromise the kernel.
Patch when possible
- affected>= a106e50be74b0896583f4d010a69f9806e4194f4 and < 260dc2be643b4a35b27008490c533613e3e53867
- affected>= a106e50be74b0896583f4d010a69f9806e4194f4 and < 035c25007c9e698bef3826070ee34bb6d778020c
- affected6.19
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.