---
id: CVE-2026-98270
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: check ras and obj before dereference

  nbio_v7_9_handle_ras_controller_intr_no_bifring() dereferences ras and obj
  without checking either for NULL
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: check ras and obj before dereference

  nbio_v7_9_handle_ras_controller_intr_no_bifring() dereferences ras and obj
  without checking either for NULL. Both amdg…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a <
    b7c7f07a40037514f8e890aa00f8d7b196d680cf
  - >-
    Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a <
    fc5f845a291fc8175e6857cd6ad042818da192e8
  - >-
    Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a <
    37583946d8751f8e285c467d770ac0b609b82a23
  - >-
    Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a <
    315c22712715491f0dfafdaf2c2b437540e68702
  - >-
    Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a <
    723d4dc628d764b19cf9efca14b82cca5ff020c9
  - Linux 6.6
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:16.487'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98270'
references:
  - url: 'https://git.kernel.org/stable/c/315c22712715491f0dfafdaf2c2b437540e68702'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/37583946d8751f8e285c467d770ac0b609b82a23'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/723d4dc628d764b19cf9efca14b82cca5ff020c9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b7c7f07a40037514f8e890aa00f8d7b196d680cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fc5f845a291fc8175e6857cd6ad042818da192e8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98270.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98270'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2546509'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98270'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98270'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98270.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-10-06T08:50:17.425Z'
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-476
epss: 0.00168
epssPercentile: 0.06046
---

## Overview

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

drm/amdgpu: check ras and obj before dereference

nbio_v7_9_handle_ras_controller_intr_no_bifring() dereferences ras and obj
without checking either for NULL. Both amdgpu_ras_get_context() and
amdgpu_ras_find_obj() can return NULL, e.g. during the window between
adev->nbio.ras being set (early in amdgpu_ras_init(), by design, to
enable the fatal-error interrupt as soon as possible) and the PCIE_BIF
ras object actually being created in RAS late_init. Any interrupt in that
window crashes in hard-IRQ context.

This is analogous to commit d190b459b2a4 ("drm/amdgpu: the warning
dereferencing obj for nbio_v7_4"), which fixed the same issue in the
nbio_v7_4 handler.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

(cherry picked from commit c7071767a50a32ed727cf800ac84372429e3b4b3)

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98270.json)