CVE-2020-17380 Memory corruption in n/a

What is CVE-2020-17380?

CVE-2020-17380 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 30 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-787

Which versions are affected by CVE-2020-17380?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2020-17380?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-17380 being exploited?

There is no known exploitation of CVE-2020-17380 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-17380, GHSA-vrm6-9j6g-w54w, UBUNTU-CVE-2020-17380.