CVE-2026-64529High· 7.8▾ TwilightIn 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, stat…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
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.
Linux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < 071590a44cbc38483fceb1ab943363ec26868e1bLinux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < 1de076f43e64bf65fbe7280a269c70e0e60518dfLinux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < a4999664a5ef77bdb0c6e6b935f581ac8ce6b63aLinux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < 6848a6e39cac44fdb7cb88f0f777df62172d1551Linux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < b1ea97076bd0a5196290deba172034e480646727Linux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < b8ebf008696de1ec08c90d51f94d7e40bd448be1Linux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < de2cc38489b629927910b1aeff69bba7bd5c6f1bLinux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < 3ae49dd04dbb11fb73f17f58a982dba128abe83aLinux >= d8cba25d2c68992a6e7c1d329b690a9ebe01167d < d237230728c567297f2f98b425d63156ab2ed17fLinux 3.17Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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