{"id":"CVE-2026-64529","summary":"crypto: qat - remove unused character device and IOCTLs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - remove unused character device and IOCTLs\n\nThe QAT driver exposes a character device (qat_adf_ctl) with IOCTLs\nfor device configuration, start, stop, status query and enumeration.\nThese IOCTLs are not part of any public uAPI header and have no known\nin-tree or out-of-tree users. Device lifecycle is already managed via\nsysfs.\n\nThe ioctl interface also increases the attack surface and is the\nsubject of a number of bug reports.\n\nRemove the character device, the IOCTL definitions, and the related\ndata structures (adf_dev_status_info, adf_user_cfg_key_val,\nadf_user_cfg_section, adf_user_cfg_ctl_data). Drop the now-unused\nadf_cfg_user.h header and strip adf_ctl_drv.c down to the minimal\nmodule_init/module_exit hooks for workqueue, AER, and crypto/compression\nalgorithm registration.\n\nClean up leftover dead code that was only reachable from the removed\nIOCTL paths: adf_cfg_del_all(), adf_devmgr_verify_id(),\nadf_devmgr_get_num_dev(), adf_devmgr_get_dev_by_id(),\nadf_get_vf_real_id() and the unused ADF_CFG macros.\n\nAdditionally, drop the entry associated to QAT IOCTLs in\nioctl-number.rst.","modified":"2026-07-28T04:03:13.685101274Z","published":"2026-07-25T09:24:18.750Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64529.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/071590a44cbc38483fceb1ab943363ec26868e1b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1de076f43e64bf65fbe7280a269c70e0e60518df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6848a6e39cac44fdb7cb88f0f777df62172d1551"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b1ea97076bd0a5196290deba172034e480646727"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b8ebf008696de1ec08c90d51f94d7e40bd448be1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de2cc38489b629927910b1aeff69bba7bd5c6f1b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64529.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64529"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d8cba25d2c68992a6e7c1d329b690a9ebe01167d"},{"fixed":"071590a44cbc38483fceb1ab943363ec26868e1b"},{"fixed":"1de076f43e64bf65fbe7280a269c70e0e60518df"},{"fixed":"a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a"},{"fixed":"6848a6e39cac44fdb7cb88f0f777df62172d1551"},{"fixed":"b1ea97076bd0a5196290deba172034e480646727"},{"fixed":"b8ebf008696de1ec08c90d51f94d7e40bd448be1"},{"fixed":"de2cc38489b629927910b1aeff69bba7bd5c6f1b"},{"fixed":"3ae49dd04dbb11fb73f17f58a982dba128abe83a"},{"fixed":"d237230728c567297f2f98b425d63156ab2ed17f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64529.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.17.0"},{"fixed":"5.10.260"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.211"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.177"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.144"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.95"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.37"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.1.0"},{"fixed":"7.1.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64529.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}