---
id: CVE-2026-98146
title: |-
  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)
summary: |-
  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 t…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-367
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= aac243092b707bb3018e951d470cc1a9bcbaba6c <
    93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a
  - >-
    Linux >= aac243092b707bb3018e951d470cc1a9bcbaba6c <
    52f3e086760a9a3e02a46a10b57caffd73b1c204
  - >-
    Linux >= aac243092b707bb3018e951d470cc1a9bcbaba6c <
    b3709d354545e70388177500761f92d906c4dfd6
  - Linux 6.14
published: '2026-09-25'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T14:10:59.253'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98146'
references:
  - url: 'https://git.kernel.org/stable/c/52f3e086760a9a3e02a46a10b57caffd73b1c204'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b3709d354545e70388177500761f92d906c4dfd6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98146.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98146'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541367'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98146'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98146'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98146.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.0009
epssPercentile: 0.00413
cvssSource: vendor
ingestedAt: '2026-09-25T11:06:38.808Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-28 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98146.json)