CVE-2026-64166: Null FFA ID Table Crash in Linux Arm_FFA Driver
CVE-2026-64166 Published on July 19, 2026
firmware: arm_ffa: Check for NULL FF-A ID table while driver registration
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_ffa: Check for NULL FF-A ID table while driver registration
The bus match callback assumes that every FF-A driver provides an
id_table and dereferences it unconditionally. Enforce that contract at
registration time so a buggy client driver cannot crash the bus during
match.
Products Associated with CVE-2026-64166
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Affected Versions
Linux:- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below f98f131256beaddd51ad468e95d90d857fef12bf is affected.
- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below bc499d1acddbb75b5b4bce05f5296dd8ef9611fd is affected.
- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below adfff93d08a2e12ecf2a1eba272d18bc749f13c0 is affected.
- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below 34f59211984f66788390e7469f3e99d3796db4a8 is affected.
- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below 820245d86ce58898fb48b4fefc77d0cafc02801d is affected.
- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below 198f6c86d508ed562f07dc00276cac6dbb5dd3bf is affected.
- Version 92743071464fca5acbbe812d9a0d88de3eaaad36 and below 0a5e695095c557d2380131b613dea4e8d90371be is affected.
- Version 5.14 is affected.
- Before 5.14 is unaffected.
- Version 5.15.209, <= 5.15.* is unaffected.
- Version 6.1.175, <= 6.1.* is unaffected.
- Version 6.6.142, <= 6.6.* is unaffected.
- Version 6.12.92, <= 6.12.* is unaffected.
- Version 6.18.34, <= 6.18.* is unaffected.
- Version 7.0.11, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.