drm/amdkfd: validate SVM ioctl nattr against buffer size

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Summary

CVECVE-2026-46197
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:35 UTC
Updated2026-05-30 11:17:25 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: validate SVM ioctl nattr against buffer size Validate nattr field against the buffer size, preventing out-of-bounds buffer access via user-controlled attribute count. (cherry picked from commit 5eca8bfdfa456c3304ca77523718fe24254c172f)

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: 0.000180000 probability, percentile 0.051640000 (date 2026-05-29)

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 42de677f79999791bee4e21be318c32d90ab62c6 91c6dc5a41695d02dfc6299f106ac38a6c493e52 git Not specified
CNA Linux Linux affected 42de677f79999791bee4e21be318c32d90ab62c6 ccd060b5c7cc75ae7e211c250b97c5b6272e7efc git Not specified
CNA Linux Linux affected 42de677f79999791bee4e21be318c32d90ab62c6 db9530a9873a7c85d2266a922589ebcf427fa631 git Not specified
CNA Linux Linux affected 42de677f79999791bee4e21be318c32d90ab62c6 6abd3a4417cb73a7d0db7e25bf11fae1074bdba3 git Not specified
CNA Linux Linux affected 42de677f79999791bee4e21be318c32d90ab62c6 045e0ff208f0838a246c10204105126611b267a1 git Not specified
CNA Linux Linux affected 5.14 Not specified
CNA Linux Linux unaffected 5.14 semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.90 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.32 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.9 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ccd060b5c7cc75ae7e211c250b97c5b6272e7efc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6abd3a4417cb73a7d0db7e25bf11fae1074bdba3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/045e0ff208f0838a246c10204105126611b267a1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/db9530a9873a7c85d2266a922589ebcf427fa631 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/91c6dc5a41695d02dfc6299f106ac38a6c493e52 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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