accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain (CVE-2026-98146) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98146

accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain

Answer in brief

CVE-2026-98146 records a Unknown severity vulnerability in accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=aac243092b707bb3018e951d470cc1a9bcbaba6c <93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a \|\| >=aac243092b707bb3018e951d470cc1a9bcbaba6c <52f3e086760a9a3e02a46a10b57caffd73b1c204 \|\| >=aac243092b707bb3018e951d470cc1a9bcbaba6c <b3709d354545e70388177500761f92d906c4dfd6	93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a, 52f3e086760a9a3e02a46a10b57caffd73b1c204, b3709d354545e70388177500761f92d906c4dfd6
Linux/Linuxgeneric	6.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In 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.

Quoted source text, attributed separately from HOL analysis.