CVE-2020-17380: Debian Linux
Medium severity, CVSS 6.3. EPSS: 0.4% chance of exploitation in the next 30 days.
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
Published 2021-01-30. Last modified 2026-06-17.