---
id: CVE-2026-23468
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: Limit BO list entry count to prevent resource exhaustion

  Userspace can pass an arbitrary number of BO list entries via the
  bo_number field
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: Limit BO list entry count to prevent resource exhaustion

  Userspace can pass an arbitrary number of BO list entries via the
  bo_number field. Although the pr…
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-770
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.2, < 6.6.140'
  - 'linux_kernel >= 6.7, < 6.12.86'
  - 'linux_kernel >= 6.13, < 6.18.20'
  - 'linux_kernel >= 6.19, < 6.19.10'
  - linux_kernel = 7.0
patched:
  - linux_kernel 6.19.10
published: '2026-04-03'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23468'
references:
  - url: 'https://git.kernel.org/stable/c/2723e6851309531ce61aed74e93a0cd268cc862a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5ce4a38e6c2488949e373d5066303f9c128db614'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6270b1a5dab94665d7adce3dc78bc9066ed28bdd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c833d6c7199c5b5fca9ec95593acd539ec9c171c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e620378aab78d415bd8a15a2f91c145906520288'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00123
epssPercentile: 0.01788
ingestedAt: '2026-07-25T22:05:03.807Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: Limit BO list entry count to prevent resource exhaustion

Userspace can pass an arbitrary number of BO list entries via the
bo_number field. Although the previous multiplication overflow check
prevents out-of-bounds allocation, a large number of entries could still
cause excessive memory allocation (up to potentially gigabytes) and
unnecessarily long list processing times.

Introduce a hard limit of 128k entries per BO list, which is more than
sufficient for any realistic use case (e.g., a single list containing all
buffers in a large scene). This prevents memory exhaustion attacks and
ensures predictable performance.

Return -EINVAL if the requested entry count exceeds the limit

(cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)

## Affected

- `linux_kernel >= 4.2, < 6.6.140`
- `linux_kernel >= 6.7, < 6.12.86`
- `linux_kernel >= 6.13, < 6.18.20`
- `linux_kernel >= 6.19, < 6.19.10`
- `linux_kernel = 7.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.10`