---
id: CVE-2026-98003
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/amd: Do not reallocate GA log buffers on resume

  Commit c5e1a1eb9279 ("iommu/amd: Simplify and Consolidate Virtual APIC
  (AVIC) Enablement") moved the GA log alloc…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/amd: Do not reallocate GA log buffers on resume

  Commit c5e1a1eb9279 ("iommu/amd: Simplify and Consolidate Virtual APIC
  (AVIC) Enablement") moved the GA log alloc…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b <
    94458b80d3b203c1c9e2c98aa7319b7713e006c0
  - >-
    Linux >= c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b <
    b6be275d19cee01f8f1f08a2ff18337103d05d40
  - >-
    Linux >= c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b <
    00a7dd64888d6dd72110b40e2824a088cf7b7386
  - Linux 6.0
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:28.533'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98003'
references:
  - url: 'https://git.kernel.org/stable/c/00a7dd64888d6dd72110b40e2824a088cf7b7386'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/94458b80d3b203c1c9e2c98aa7319b7713e006c0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b6be275d19cee01f8f1f08a2ff18337103d05d40'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98003.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98003'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541117'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98003'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98003'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98003.mbox
  - url: 'https://git.kernel.org/stable/c/8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434'
  - url: 'https://git.kernel.org/stable/c/ff85cdc2889e1c885eed218ee5bc0b59e0235b3f'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-25T11:06:38.861Z'
epss: 0.00168
epssPercentile: 0.06022
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-772
---

## Overview

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

iommu/amd: Do not reallocate GA log buffers on resume

Commit c5e1a1eb9279 ("iommu/amd: Simplify and Consolidate Virtual APIC
(AVIC) Enablement") moved the GA log allocation from iommu_init_pci()
to enable_iommus_vapic(), which is called on every resume.

iommu_init_ga_log() assigns iommu->ga_log and iommu->ga_log_tail
unconditionally. Each resume therefore replaces the boot-time pointers
and leaks both old allocations. The function also uses GFP_KERNEL from a
syscore resume callback, where interrupts are disabled and the non-boot
CPUs are offline.

Return early if both buffers are already allocated. Clear the pointers
in free_ga_log() so a partial allocation failure cannot leave ga_log
dangling.

## 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 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-28 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98003.json)