CVE-2026-64529
crypto: qat - remove unused character device and IOCTLs
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: qat - remove unused character device and IOCTLs The QAT driver exposes a character device (qat_adf_ctl) with IOCTLs for device configuration, start, stop, status query and enumeration. These IOCTLs are not part of any public uAPI header and have no known in-tree or out-of-tree users. Device lifecycle is already managed via sysfs. The ioctl interface also increases the attack surface and is the subject of a number of bug reports. Remove the character device, the IOCTL definitions, and the related data structures (adf_dev_status_info, adf_user_cfg_key_val, adf_user_cfg_section, adf_user_cfg_ctl_data). Drop the now-unused adf_cfg_user.h header and strip adf_ctl_drv.c down to the minimal module_init/module_exit hooks for workqueue, AER, and crypto/compression algorithm registration. Clean up leftover dead code that was only reachable from the removed IOCTL paths: adf_cfg_del_all(), adf_devmgr_verify_id(), adf_devmgr_get_num_dev(), adf_devmgr_get_dev_by_id(), adf_get_vf_real_id() and the unused ADF_CFG macros. Additionally, drop the entry associated to QAT IOCTLs in ioctl-number.rst.
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
July 25, 2026, 10:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64529
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Remove the character device and associated IOCTL definitions.
- Remove unused header and data structures.
- Clean up leftover dead code.
- Update ioctl-number.rst documentation.
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-2026-64529.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64529 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-2026-64529
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-2026-64529 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64529 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 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': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': '071590a44cbc38483fceb1ab943363ec26868e1b', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': '1de076f43e64bf65fbe7280a269c70e0e60518df', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': 'a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': '6848a6e39cac44fdb7cb88f0f777df62172d1551', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': 'b1ea97076bd0a5196290deba172034e480646727', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': 'b8ebf008696de1ec08c90d51f94d7e40bd448be1', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': 'de2cc38489b629927910b1aeff69bba7bd5c6f1b', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': '3ae49dd04dbb11fb73f17f58a982dba128abe83a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd8cba25d2c68992a6e7c1d329b690a9ebe01167d', 'lessThan': 'd237230728c567297f2f98b425d63156ab2ed17f', 'versionType': 'git'}], 'programFiles': ['Documentation/userspace-api/ioctl/ioctl-number.rst', 'drivers/crypto/intel/qat/qat_common/adf_cfg.c', 'drivers/crypto/intel/qat/qat_common/adf_cfg.h', 'drivers/crypto/intel/qat/qat_common/adf_cfg_common.h', 'drivers/crypto/intel/qat/qat_common/adf_cfg_user.h', 'drivers/crypto/intel/qat/qat_common/adf_common_drv.h', 'drivers/crypto/intel/qat/qat_common/adf_ctl_drv.c', 'drivers/crypto/intel/qat/qat_common/adf_dev_mgr.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.260', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.211', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.177', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.144', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.37', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.14', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1.2', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['Documentation/userspace-api/ioctl/ioctl-number.rst', 'drivers/crypto/intel/qat/qat_common/adf_cfg.c', 'drivers/crypto/intel/qat/qat_common/adf_cfg.h', 'drivers/crypto/intel/qat/qat_common/adf_cfg_common.h', 'drivers/crypto/intel/qat/qat_common/adf_cfg_user.h', 'drivers/crypto/intel/qat/qat_common/adf_common_drv.h', 'drivers/crypto/intel/qat/qat_common/adf_ctl_drv.c', 'drivers/crypto/intel/qat/qat_common/adf_dev_mgr.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: crypto: qat - remove unused character device and IOCTLs The QAT driver exposes a character device (qat_adf_ctl) with IOCTLs for device configuration, start, stop, status query and enumeration. These IOCTLs are not part of any public uAPI header and have no known in-tree or out-of-tree users. Device lifecycle is already managed via sysfs. The ioctl interface also increases the attack surface and is the subject of a number of bug reports. Remove the character device, the IOCTL definitions, and the related data structures (adf_dev_status_info, adf_user_cfg_key_val, adf_user_cfg_section, adf_user_cfg_ctl_data). Drop the now-unused adf_cfg_user.h header and strip adf_ctl_drv.c down to the minimal module_init/module_exit hooks for workqueue, AER, and crypto/compression algorithm registration. Clean up leftover dead code that was only reachable from the removed IOCTL paths: adf_cfg_del_all(), adf_devmgr_verify_id(), adf_devmgr_get_num_dev(), adf_devmgr_get_dev_by_id(), adf_get_vf_real_id() and the unused ADF_CFG macros. Additionally, drop the entry associated to QAT IOCTLs in ioctl-number.rst. Added Reference https://git.kernel.org/stable/c/071590a44cbc38483fceb1ab943363ec26868e1b Added Reference https://git.kernel.org/stable/c/1de076f43e64bf65fbe7280a269c70e0e60518df Added Reference https://git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a Added Reference https://git.kernel.org/stable/c/6848a6e39cac44fdb7cb88f0f777df62172d1551 Added Reference https://git.kernel.org/stable/c/a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a Added Reference https://git.kernel.org/stable/c/b1ea97076bd0a5196290deba172034e480646727 Added Reference https://git.kernel.org/stable/c/b8ebf008696de1ec08c90d51f94d7e40bd448be1 Added Reference https://git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f Added Reference https://git.kernel.org/stable/c/de2cc38489b629927910b1aeff69bba7bd5c6f1b