CVE-2020-17380

Name: CVE-2020-17380
Creator: NVD / NIST
Published: 2021-01-30T06:15:12.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2020-17380 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.3/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

EPSS Probability

0.42%

34.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 5.0.0
Debian	Debian Linux	9.0

References

http://www.openwall.com/lists/oss-security/2021/03/09/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1862167Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlMailing List, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.htmlMailing List, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210312-0003/Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/09/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1862167Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlMailing List, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.htmlMailing List, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210312-0003/Third Party Advisory

Timeline

Published: Jan 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-17380?

How severe is CVE-2020-17380?

CVE-2020-17380 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2020-17380?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-17380?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST