CVE-2026-64529 (GCVE-0-2026-64529)
Vulnerability from cvelistv5 – Published: 2026-07-25 09:24 – Updated: 2026-10-19 20:48
VLAI
EPSS
VEX
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
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:41 UTC
CWE
- CWE-489 - Active Debug Code
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| 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) |
guessed | |
| 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 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-64529",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:41:41.952211Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-489",
"description": "CWE-489 Active Debug Code",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-19T20:48:38.158Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"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",
"vendor": "Linux",
"versions": [
{
"lessThan": "071590a44cbc38483fceb1ab943363ec26868e1b",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "1de076f43e64bf65fbe7280a269c70e0e60518df",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "6848a6e39cac44fdb7cb88f0f777df62172d1551",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "b1ea97076bd0a5196290deba172034e480646727",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "b8ebf008696de1ec08c90d51f94d7e40bd448be1",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "de2cc38489b629927910b1aeff69bba7bd5c6f1b",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "3ae49dd04dbb11fb73f17f58a982dba128abe83a",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "d237230728c567297f2f98b425d63156ab2ed17f",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"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",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.17"
},
{
"lessThan": "3.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.260",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.211",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.177",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.144",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.95",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.37",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.260",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.211",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.177",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.144",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.95",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.37",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.14",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.2",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "3.17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable interface is reached through local open and ioctl syscalls on /dev/qat_adf_ctl; it has no network or physical entry path.\nAC:L - The attacker can repeatedly invoke the start or status ioctl while coordinating QAT VF teardown in a hot-pluggable deployment, giving effective control over the race. A short ioctl loop has already produced the confirmed [KASAN use-after-free](https://www.spinics.net/lists/kernel/msg6034466.html ).\nPR:L - The driver performs no capability or credential check, so device-file permissions are the only gate. Standard QAT installation grants non-root qat-group members mode-0660 access to qat_adf_ctl according to the [Intel QAT installation guide](https://intel.github.io/quickassist/GSG/2.X/installation.html ).\nUI:N - Exploitation requires only attacker-generated ioctl calls and device-lifecycle operations, with no action by another user.\nS:U - The flaw compromises the same host or guest kernel security authority in which the vulnerable QAT driver executes; ordinary kernel privilege escalation does not change scope.\nC:H - The freed accel_dev can be reclaimed with attacker-influenced heap contents, and the status path follows stale pointers and invokes callbacks, providing a defensible route to arbitrary kernel-memory disclosure.\nI:H - Mutex operations and configuration paths write through the reclaimed object, while forged hw_device callbacks provide a plausible control-flow-hijack and arbitrary-kernel-write primitive.\nA:H - The UAF is confirmed to cause a KASAN kernel failure, and repeated malformed ioctls can independently create a printk storm leading to stalls, watchdog lockups, or panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:57:06.789Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/071590a44cbc38483fceb1ab943363ec26868e1b"
},
{
"url": "https://git.kernel.org/stable/c/1de076f43e64bf65fbe7280a269c70e0e60518df"
},
{
"url": "https://git.kernel.org/stable/c/a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a"
},
{
"url": "https://git.kernel.org/stable/c/6848a6e39cac44fdb7cb88f0f777df62172d1551"
},
{
"url": "https://git.kernel.org/stable/c/b1ea97076bd0a5196290deba172034e480646727"
},
{
"url": "https://git.kernel.org/stable/c/b8ebf008696de1ec08c90d51f94d7e40bd448be1"
},
{
"url": "https://git.kernel.org/stable/c/de2cc38489b629927910b1aeff69bba7bd5c6f1b"
},
{
"url": "https://git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a"
},
{
"url": "https://git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f"
}
],
"title": "crypto: qat - remove unused character device and IOCTLs",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64529",
"datePublished": "2026-07-25T09:24:18.750Z",
"dateReserved": "2026-07-19T15:36:31.794Z",
"dateUpdated": "2026-10-19T20:48:38.158Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-64529",
"date": "2026-10-31",
"epss": "0.00184",
"percentile": "0.07959"
},
"microsoft_vex": {
"current_release_date": "2026-07-27T14:44:27.000Z",
"cve": "CVE-2026-64529",
"id": "msrc_CVE-2026-64529",
"initial_release_date": "2026-07-26T01:02:09.000Z",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "crypto: qat - remove unused character device and IOCTLs",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64529.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"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",
"vendor": "Linux",
"versions": [
{
"lessThan": "071590a44cbc38483fceb1ab943363ec26868e1b",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "1de076f43e64bf65fbe7280a269c70e0e60518df",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "6848a6e39cac44fdb7cb88f0f777df62172d1551",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "b1ea97076bd0a5196290deba172034e480646727",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "b8ebf008696de1ec08c90d51f94d7e40bd448be1",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "de2cc38489b629927910b1aeff69bba7bd5c6f1b",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "3ae49dd04dbb11fb73f17f58a982dba128abe83a",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "d237230728c567297f2f98b425d63156ab2ed17f",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"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",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.17"
},
{
"lessThan": "3.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.260",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.211",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.177",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.144",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.95",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.37",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"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."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncrypto: qat - eliminar dispositivo de caracteres y IOCTLs no utilizados\n\nEl controlador QAT expone un dispositivo de caracteres (qat_adf_ctl) con IOCTLs para configuraci\u00f3n de dispositivo, inicio, detenci\u00f3n, consulta de estado y enumeraci\u00f3n. Estos IOCTLs no forman parte de ning\u00fan encabezado uAPI p\u00fablico y no tienen usuarios conocidos dentro o fuera del \u00e1rbol. El ciclo de vida del dispositivo ya se gestiona a trav\u00e9s de sysfs.\n\nLa interfaz ioctl tambi\u00e9n aumenta la superficie de ataque y es objeto de varios informes de errores.\n\nEliminar el dispositivo de caracteres, las definiciones de IOCTL y las estructuras de datos relacionadas (adf_dev_status_info, adf_user_cfg_key_val, adf_user_cfg_section, adf_user_cfg_ctl_data). Eliminar el encabezado adf_cfg_user.h ahora no utilizado y reducir adf_ctl_drv.c a los ganchos m\u00ednimos module_init/module_exit para el registro de workqueue, AER y algoritmos de criptograf\u00eda/compresi\u00f3n.\n\nLimpiar el c\u00f3digo muerto restante que solo era accesible desde las rutas de IOCTL eliminadas: adf_cfg_del_all(), adf_devmgr_verify_id(), adf_devmgr_get_num_dev(), adf_devmgr_get_dev_by_id(), adf_get_vf_real_id() y las macros ADF_CFG no utilizadas.\n\nAdem\u00e1s, eliminar la entrada asociada a los IOCTLs de QAT en ioctl-number.rst."
}
],
"id": "CVE-2026-64529",
"lastModified": "2026-10-24T13:10:00.147",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-64529",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:41:41.952211Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-25T10:17:39.317",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"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"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-489"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-10-30T04:19:15+00:00",
"cve": "CVE-2026-64529",
"id": "CVE-2026-64529",
"initial_release_date": "2026-07-25T00:00:00+00:00",
"product_status:known_affected": "186",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: crypto: qat - remove unused character device and IOCTLs",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64529.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-64529",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:41:41.952211Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-16T15:41:42.541Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"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",
"vendor": "Linux",
"versions": [
{
"lessThan": "071590a44cbc38483fceb1ab943363ec26868e1b",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "1de076f43e64bf65fbe7280a269c70e0e60518df",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "6848a6e39cac44fdb7cb88f0f777df62172d1551",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "b1ea97076bd0a5196290deba172034e480646727",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "b8ebf008696de1ec08c90d51f94d7e40bd448be1",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "de2cc38489b629927910b1aeff69bba7bd5c6f1b",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "3ae49dd04dbb11fb73f17f58a982dba128abe83a",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
},
{
"lessThan": "d237230728c567297f2f98b425d63156ab2ed17f",
"status": "affected",
"version": "d8cba25d2c68992a6e7c1d329b690a9ebe01167d",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"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",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.17"
},
{
"lessThan": "3.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.260",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.211",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.177",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.144",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.95",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.37",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.260",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.211",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.177",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.144",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.95",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.37",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.14",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.2",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "3.17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable interface is reached through local open and ioctl syscalls on /dev/qat_adf_ctl; it has no network or physical entry path.\nAC:L - The attacker can repeatedly invoke the start or status ioctl while coordinating QAT VF teardown in a hot-pluggable deployment, giving effective control over the race. A short ioctl loop has already produced the confirmed [KASAN use-after-free](https://www.spinics.net/lists/kernel/msg6034466.html ).\nPR:L - The driver performs no capability or credential check, so device-file permissions are the only gate. Standard QAT installation grants non-root qat-group members mode-0660 access to qat_adf_ctl according to the [Intel QAT installation guide](https://intel.github.io/quickassist/GSG/2.X/installation.html ).\nUI:N - Exploitation requires only attacker-generated ioctl calls and device-lifecycle operations, with no action by another user.\nS:U - The flaw compromises the same host or guest kernel security authority in which the vulnerable QAT driver executes; ordinary kernel privilege escalation does not change scope.\nC:H - The freed accel_dev can be reclaimed with attacker-influenced heap contents, and the status path follows stale pointers and invokes callbacks, providing a defensible route to arbitrary kernel-memory disclosure.\nI:H - Mutex operations and configuration paths write through the reclaimed object, while forged hw_device callbacks provide a plausible control-flow-hijack and arbitrary-kernel-write primitive.\nA:H - The UAF is confirmed to cause a KASAN kernel failure, and repeated malformed ioctls can independently create a printk storm leading to stalls, watchdog lockups, or panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:57:06.789Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/071590a44cbc38483fceb1ab943363ec26868e1b"
},
{
"url": "https://git.kernel.org/stable/c/1de076f43e64bf65fbe7280a269c70e0e60518df"
},
{
"url": "https://git.kernel.org/stable/c/a4999664a5ef77bdb0c6e6b935f581ac8ce6b63a"
},
{
"url": "https://git.kernel.org/stable/c/6848a6e39cac44fdb7cb88f0f777df62172d1551"
},
{
"url": "https://git.kernel.org/stable/c/b1ea97076bd0a5196290deba172034e480646727"
},
{
"url": "https://git.kernel.org/stable/c/b8ebf008696de1ec08c90d51f94d7e40bd448be1"
},
{
"url": "https://git.kernel.org/stable/c/de2cc38489b629927910b1aeff69bba7bd5c6f1b"
},
{
"url": "https://git.kernel.org/stable/c/3ae49dd04dbb11fb73f17f58a982dba128abe83a"
},
{
"url": "https://git.kernel.org/stable/c/d237230728c567297f2f98b425d63156ab2ed17f"
}
],
"title": "crypto: qat - remove unused character device and IOCTLs",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64529",
"datePublished": "2026-07-25T09:24:18.750Z",
"dateReserved": "2026-07-19T15:36:31.794Z",
"dateUpdated": "2026-10-16T15:42:39.580Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.