CVE-2021-36147

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-02 · updated 2026-06-17
Weakness: CWE-476

Description

An issue was discovered in ACRN before 2.5. It allows a devicemodel/hw/pci/virtio/virtio_net.c virtio_net_ping_rxq NULL pointer dereference for vq->used.

Affected products

Linux Acrn: before 2.5 — fixed in 2.5

How to fix

Upgrade to a fixed version: Linux Acrn 2.5. Check the vendor advisory for mitigations.

References

https://github.com/projectacrn/acrn-hypervisor/pull/6121/commits/131116b15b0e35a62085d23686b43ed1c12c1331
https://github.com/projectacrn/acrn-hypervisor/pull/6121/commits/131116b15b0e35a62085d23686b43ed1c12c1331

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