The sdhci_sdma_transfer_multi_blocks function in hw/sd/sdhci.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds heap access and crash) or execute arbitrary code on the QEMU host via vectors involving the data transfer length.
git.qemu-project.org/?p=qemu.git%3Ba=commitdiff%3Bh=42922105beb14c2fc58185ea022b9f72fb5465e9
www.openwall.com/lists/oss-security/2017/01/30/2
www.openwall.com/lists/oss-security/2017/01/31/10
www.openwall.com/lists/oss-security/2017/02/12/1
www.securityfocus.com/bid/95885
bugzilla.redhat.com/show_bug.cgi?id=1417559
lists.debian.org/debian-lts-announce/2018/09/msg00007.html
security.gentoo.org/glsa/201702-28