CVE-2022-3872: Qemu

High severity, CVSS 8.6. EPSS: 0.9% chance of exploitation in the next 30 days.

An off-by-one read/write issue was found in the SDHCI device of QEMU. It occurs when reading/writing the Buffer Data Port Register in sdhci_read_dataport and sdhci_write_dataport, respectively, if data_count == block_size. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Affected products

• Qemu Qemu: before 7.1.0 (fixed in 7.1.0); version 7.1.0 only

Published 2022-11-07. Last modified 2026-06-17.