accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98146
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:46 UTC
Updated2026-09-30 14:10:59 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain struct amdxdna_cmd_chain contains a flexible array annotated with __counted_by(command_count). Since the structure is stored in shared AMDXDNA_BO_SHARE memory, userspace can modify command_count concurrently. If command_count is changed to zero, the bounds check generated from __counted_by may fail and trigger a kernel panic. Remove __counted_by to avoid relying on the userspace-controlled command_count for the flexible array bounds check.

Risk And Classification

EPSS: 0.001540000 probability, percentile 0.038930000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected aac243092b707bb3018e951d470cc1a9bcbaba6c 93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a git Not specified
CNA Linux Linux affected aac243092b707bb3018e951d470cc1a9bcbaba6c 52f3e086760a9a3e02a46a10b57caffd73b1c204 git Not specified
CNA Linux Linux affected aac243092b707bb3018e951d470cc1a9bcbaba6c b3709d354545e70388177500761f92d906c4dfd6 git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/52f3e086760a9a3e02a46a10b57caffd73b1c204 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b3709d354545e70388177500761f92d906c4dfd6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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