iommu/amd: Do not reallocate GA log buffers on resume (CVE-2026-98003) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98003

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

Answer in brief

CVE-2026-98003 records a Unknown severity vulnerability in iommu/amd: Do not reallocate GA log buffers on resume. 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	>=c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b <94458b80d3b203c1c9e2c98aa7319b7713e006c0 \|\| >=c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b <b6be275d19cee01f8f1f08a2ff18337103d05d40 \|\| >=c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b <00a7dd64888d6dd72110b40e2824a088cf7b7386	94458b80d3b203c1c9e2c98aa7319b7713e006c0, b6be275d19cee01f8f1f08a2ff18337103d05d40, 00a7dd64888d6dd72110b40e2824a088cf7b7386
Linux/Linuxgeneric	6.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 94458b80d3b203c1c9e2c98aa7319b7713e006c0 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: 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.

Quoted source text, attributed separately from HOL analysis.