crypto: qat - remove unused character device and IOCTLs

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64529
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-25 10:17:39 UTC
Updated2026-07-27 05:16:56 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001350000 probability, percentile 0.033720000 (date 2026-07-29)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d 071590a44cbc38483fceb1ab943363ec26868e1b git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d 1de076f43e64bf65fbe7280a269c70e0e60518df git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d 6848a6e39cac44fdb7cb88f0f777df62172d1551 git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d b1ea97076bd0a5196290deba172034e480646727 git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d b8ebf008696de1ec08c90d51f94d7e40bd448be1 git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d de2cc38489b629927910b1aeff69bba7bd5c6f1b git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d 3ae49dd04dbb11fb73f17f58a982dba128abe83a git Not specified
CNA Linux Linux affected d8cba25d2c68992a6e7c1d329b690a9ebe01167d d237230728c567297f2f98b425d63156ab2ed17f git Not specified
CNA Linux Linux affected 3.17 Not specified
CNA Linux Linux unaffected 3.17 semver Not specified
CNA Linux Linux unaffected 5.10.260 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.211 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.177 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.144 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.95 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.37 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.14 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1.2 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/071590a44cbc38483fceb1ab943363ec26868e1b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1de076f43e64bf65fbe7280a269c70e0e60518df 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6848a6e39cac44fdb7cb88f0f777df62172d1551 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b1ea97076bd0a5196290deba172034e480646727 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/de2cc38489b629927910b1aeff69bba7bd5c6f1b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b8ebf008696de1ec08c90d51f94d7e40bd448be1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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