CVE-2026-64529 (GCVE-0-2026-64529)

Vulnerability from cvelistv5 – Published: 2026-07-25 09:24 – Updated: 2026-07-25 09:24
VLAI
Title
crypto: qat - remove unused character device and IOCTLs
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 071590a44cbc38483fceb1ab943363ec26868e1b (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 1de076f43e64bf65fbe7280a269c70e0e60518df (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 6848a6e39cac44fdb7cb88f0f777df62172d1551 (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < b1ea97076bd0a5196290deba172034e480646727 (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < b8ebf008696de1ec08c90d51f94d7e40bd448be1 (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < de2cc38489b629927910b1aeff69bba7bd5c6f1b (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 3ae49dd04dbb11fb73f17f58a982dba128abe83a (git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < d237230728c567297f2f98b425d63156ab2ed17f (git)
Create a notification for this product.
Linux Linux Affected: 3.17
Unaffected: 0 , < 3.17 (semver)
Unaffected: 5.10.260 , ≤ 5.10.* (semver)
Unaffected: 5.15.211 , ≤ 5.15.* (semver)
Unaffected: 6.1.177 , ≤ 6.1.* (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.37 , ≤ 6.18.* (semver)
Unaffected: 7.0.14 , ≤ 7.0.* (semver)
Unaffected: 7.1.2 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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            "drivers/crypto/intel/qat/qat_common/adf_cfg_common.h",
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          "value": "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."
        }
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        "dateUpdated": "2026-07-25T09:24:18.750Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f"
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      ],
      "title": "crypto: qat - remove unused character device and IOCTLs",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64529",
    "datePublished": "2026-07-25T09:24:18.750Z",
    "dateReserved": "2026-07-19T15:36:31.794Z",
    "dateUpdated": "2026-07-25T09:24:18.750Z",
    "state": "PUBLISHED"
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      "date": "2026-07-25",
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      "percentile": "0.15578"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64529\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:39.317\",\"lastModified\":\"2026-07-25T10:17:39.317\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"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\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"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\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"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\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.260\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.211\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.177\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.144\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.95\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.37\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.14\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.2\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/071590a44cbc38483fceb1ab943363ec26868e1b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1de076f43e64bf65fbe7280a269c70e0e60518df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6848a6e39cac44fdb7cb88f0f777df62172d1551\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b1ea97076bd0a5196290deba172034e480646727\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b8ebf008696de1ec08c90d51f94d7e40bd448be1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/de2cc38489b629927910b1aeff69bba7bd5c6f1b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.