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TI-2021-14568 Aliases CVE-2021-36148GHSA-fwp2-vqg8-gvfh

An issue was discovered in ACRN before 2.5.

Priority LOW 35CWE-120Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

An issue was discovered in ACRN before 2.5. dmar_free_irte in hypervisor/arch/x86/vtd.c allows an irte_alloc_bitmap buffer overflow.

Why it matters now

EPSS 0.00664 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:acrn:*:*:*:*:*:*:*:*before 2.5VulnerableLinux
  • cpe:2.3:o:linux:acrn:*:*:*:*:*:*:*:* Versions before 2.5 Vulnerable ·Linux

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-36148
  2. 2026-10-03 Alias added: GHSA-fwp2-vqg8-gvfh
  3. 2026-10-05 EPSS moved to the 50th–90th percentile

References

Patch 1

  • TI-2019-13579 The Device Model in ACRN before 2019w25.5-140000p relies on assert calls in… CVSS 3.1HIGH 7.5
  • TI-2021-14567 An issue was discovered in ACRN before 2.5. CVSS 3.1HIGH 7.5
  • TI-2021-14566 ACRN before 2.5 has a devicemodel/hw/pci/xhci.c NULL Pointer Dereference for a trb pointer. CVSS 3.1HIGH 7.5
  • TI-2021-14565 The Device Model in ACRN through 2.5 has a devicemodel/core/mem.c use-after-free for a freed rb_entry. CVSS 3.1HIGH 7.5
  • TI-2021-14564 The polling timer handler in ACRN before 2.5 has a use-after-free for a freed virtio… CVSS 3.1HIGH 7.5
  • TI-2021-14563 ACRN before 2.5 has a hw/pci/virtio/virtio.c vq_endchains NULL Pointer Dereference. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences