What is CVE-2021-36147?

CVE-2021-36147 is a high-severity vulnerability in Linux Acrn, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-07-02.

How severe is CVE-2021-36147?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Linux Acrn

CVE-2021-36147

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.

Published 2021-07-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Linux Acrn

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/projectacrn/acrn-hypervisor/pull/6121/commits/131116b15b0e35a62085d2… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-36147?: CVE-2021-36147 is a high-severity vulnerability in Linux Acrn, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-07-02.
How severe is CVE-2021-36147?: High severity. CVSS v3 base score is 7.5 out of 10.