CVE-2026-64081
Linux arm_ffa firmware parsing flaw allows kernel OOB read/oversized allocation.
Is CVE-2026-64081 being exploited?
Not confirmed. CVE-2026-64081 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 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-64081?
CVE-2026-64081 is rated High with a CVSS score of 8.4. 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-2026-64081?
Yes. A fix has been recorded for CVE-2026-64081. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64081 affect?
CVE-2026-64081 affects Linux kernel (arm_ffa firmware module), ARM platforms using Firmware Framework Architecture (FFA). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64081?
Update to patched Linux kernel and verify firmware originates from trusted sources.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Malformed firmware notifications can cause kernel out-of-bounds reads or oversized allocations, enabling info disclosure, crash/DoS, or possible privilege escalation.
Patch when possible
- affected>= 285a5ea0f542db94c3ed11e01a71abb47d15cbf5 and < 3c51d99449dc5a01c08a7fce6071d6721f5aac83
- affected>= 285a5ea0f542db94c3ed11e01a71abb47d15cbf5 and < 76eb90e2b03de147e12ab68ea8afd8ea0342df0a
- affected>= 285a5ea0f542db94c3ed11e01a71abb47d15cbf5 and < 4a1cc9e96b311d2609a6f963a5e35bd4ae730d97
- affected6.15
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.