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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17380
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=1862167
- https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.html
- https://security.netapp.com/advisory/ntap-20210312-0003/
- MLIST:[debian-lts-announce] 20210410 [SECURITY] [DLA 2623-1] qemu security update
- URL: https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html