CVE-2026-63882

Local service interrupt via out-of-order KFD ioctls

Published Jul 19, 2026 · Updated Jul 19, 2026

NULL pointer dereference in Linux Kernel amdkfd SVM handling allows local users to interrupt kernel service through KFD ioctls. svm_range_set_attr locks process_info->lock without rejecting NULL when kfd_ioctl_svm precedes kfd_ioctl_acquire_vm. Reachability requires an AMD GPU, the amdkfd compute driver, local device access, and the out-of-order ioctl sequence; no privilege gain or data exposure is established.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux Kernel amdkfd SVM handling allows local users to interrupt kernel service through KFD ioctls. svm_range_set_attr locks process_info->lock without rejecting NULL when kfd_ioctl_svm precedes kfd_ioctl_acquire_vm. Reachability requires an AMD GPU, the amdkfd compute driver, local device access, and the out-of-order ioctl sequence; no privilege gain or data exposure is established.

The record

CVE
CVE-2026-63882
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.1.176
  2. Affected versionversion=0 <6.12.93
  3. Affected versionversion=0 <6.18.35
  4. Affected versionversion=0 <6.6.143
  5. Affected versionversion=0 <7.0.12
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2f9c3c161692f5bf1436e869a651bed10936e071
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6495cc09f7e6c2af571b3e2e4640283b3792ebf2
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c24eee21f9a943374fd64260a6e17dc3984e3d0e
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d4e73a047d4ea866b75ee4b879d0d787dfa2704c
  10. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e4dcb5d6360319609bc5b05fb40e98b0af6bc674
  11. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e984d61d92e702096058f0f828f4b2b8563b88ce

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0 <6.1.176; version=0 <6.12.93; version=0 <6.18.35; version=0 <6.6.143; version=0 <7.0.12; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2f9c3c161692f5bf1436e869a651bed10936e071; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6495cc09f7e6c2af571b3e2e4640283b3792ebf2; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c24eee21f9a943374fd64260a6e17dc3984e3d0e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d4e73a047d4ea866b75ee4b879d0d787dfa2704c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e4dcb5d6360319609bc5b05fb40e98b0af6bc674; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e984d61d92e702096058f0f828f4b2b8563b88ce

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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