MEDIUM 6.3 Microsoft

CVE-2020-17380

A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host resulting in a denial of service condition or potentially execute arbitrary code with privileges of the QEMU process on the host.

Microsoft Security Update 2021-Jan: A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host resulting in a denial of service condition or potentially execute arbitrary code with privileges of the QEMU process on the host.

Affected Products

References

Published: 2021-01-12 · Source: Microsoft · Feed updated: 2026-09-07
This medium severity vulnerability with a CVSS score of 6.3 was published on 2021-01-12 via Microsoft. Affected: cm1 qemu-kvm 4.2.0-25 on CBL Mariner 1.0.
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