Vulnerability 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.
References
- https://git.kernel.org/stable/c/00a7dd64888d6dd72110b40e2824a088cf7b7386
- https://git.kernel.org/stable/c/94458b80d3b203c1c9e2c98aa7319b7713e006c0
- https://git.kernel.org/stable/c/b6be275d19cee01f8f1f08a2ff18337103d05d40
FAQ
What is CVE-2026-98003?
CVE-2026-98003 is a documented vulnerability. 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...
How severe is CVE-2026-98003?
CVSS scoring is not yet available for CVE-2026-98003. Check NVD for updates.
Is there a patch for CVE-2026-98003?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.