CVE-2026-64255
iwlwifi kernel OOB access via BA handler can crash or compromise kernel
Is CVE-2026-64255 being exploited?
Not confirmed. CVE-2026-64255 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-2026-64255?
CVE-2026-64255 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-2026-64255?
Yes. A fix has been recorded for CVE-2026-64255. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64255 affect?
CVE-2026-64255 affects Linux kernel (iwlwifi driver), Intel wireless NICs (iwlwifi), Linux-based devices with Intel Wi‑Fi (laptops, embedded). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64255?
Apply vendor/kernel updates with the iwlwifi fix or disable Wi‑Fi until patched
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Out-of-bounds access in iwlwifi via crafted BA frames can crash the kernel or corrupt memory, enabling DoS or potential privilege escalation/remote code execution.
Immediate action required
- affected>= 9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b and < 1de92789ce31e46fa7e7d8e89c90b19cdb1c103b
- affected>= 9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b and < fe7f339f63c9dc4ca546ed7ac38ba4bb3a99dcfc
- affected>= 9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b and < f056fc2b927448d37eca6b6cacc3d1b0f67b20d2
- affected6.4
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.