CVE-2026-64166
firmware: arm_ffa: Check for NULL FF-A ID table while driver registration
Description
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.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
Aug. 13, 2026, 3:31 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to the latest stable version.
- Ensure FF-A drivers provide a valid id_table.
- Register drivers carefully to avoid NULL pointer dereferences.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64166.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64166 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64166
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64166 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64166 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.92 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.34 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.142 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.14.1 up to (excluding) 5.15.209 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0a5e695095c557d2380131b613dea4e8d90371be Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/198f6c86d508ed562f07dc00276cac6dbb5dd3bf Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/34f59211984f66788390e7469f3e99d3796db4a8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/820245d86ce58898fb48b4fefc77d0cafc02801d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/adfff93d08a2e12ecf2a1eba272d18bc749f13c0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bc499d1acddbb75b5b4bce05f5296dd8ef9611fd Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f98f131256beaddd51ad468e95d90d857fef12bf Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': 'f98f131256beaddd51ad468e95d90d857fef12bf', 'versionType': 'git'}, {'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': 'bc499d1acddbb75b5b4bce05f5296dd8ef9611fd', 'versionType': 'git'}, {'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': 'adfff93d08a2e12ecf2a1eba272d18bc749f13c0', 'versionType': 'git'}, {'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': '34f59211984f66788390e7469f3e99d3796db4a8', 'versionType': 'git'}, {'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': '820245d86ce58898fb48b4fefc77d0cafc02801d', 'versionType': 'git'}, {'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': '198f6c86d508ed562f07dc00276cac6dbb5dd3bf', 'versionType': 'git'}, {'status': 'affected', 'version': '92743071464fca5acbbe812d9a0d88de3eaaad36', 'lessThan': '0a5e695095c557d2380131b613dea4e8d90371be', 'versionType': 'git'}], 'programFiles': ['drivers/firmware/arm_ffa/bus.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.142', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.92', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/firmware/arm_ffa/bus.c'], 'defaultStatus': 'affected'}] Added Description 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. Added Reference https://git.kernel.org/stable/c/0a5e695095c557d2380131b613dea4e8d90371be Added Reference https://git.kernel.org/stable/c/198f6c86d508ed562f07dc00276cac6dbb5dd3bf Added Reference https://git.kernel.org/stable/c/34f59211984f66788390e7469f3e99d3796db4a8 Added Reference https://git.kernel.org/stable/c/820245d86ce58898fb48b4fefc77d0cafc02801d Added Reference https://git.kernel.org/stable/c/adfff93d08a2e12ecf2a1eba272d18bc749f13c0 Added Reference https://git.kernel.org/stable/c/bc499d1acddbb75b5b4bce05f5296dd8ef9611fd Added Reference https://git.kernel.org/stable/c/f98f131256beaddd51ad468e95d90d857fef12bf