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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-98003

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b to < 8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434affected
  • c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b to < ff85cdc2889e1c885eed218ee5bc0b59e0235b3faffected
  • c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b to < 94458b80d3b203c1c9e2c98aa7319b7713e006c0affected
  • c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b to < b6be275d19cee01f8f1f08a2ff18337103d05d40affected
  • c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b to < 00a7dd64888d6dd72110b40e2824a088cf7b7386affected

Linux Linux

Default version status: affected

  • 6.0affected
  • 0 to < 6.0unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.114 to ≤ 6.12.*unaffected
  • 6.18.53 to ≤ 6.18.*unaffected
  • 7.2.7 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References