Debian 8: DLA-1781-1 Critical: QEMU Buffer Overflow And Exploits

It was found that the SLiRP networking implementation could use a wrong
size when reallocating its buffers, which can be exploited by a
priviledged user on a guest to cause denial of service or possibly
arbitrary code execution on the host system.

CVE-2018-18849

It was found that the LSI53C895A SCSI Host Bus Adapter emulation was
susceptible to an out of bounds memory access, which could be leveraged
by a malicious guest user to crash the QEMU process.

CVE-2018-20815

A heap buffer overflow was found in the load_device_tree function,
which could be used by a malicious user to potentially execute
arbitrary code with the priviledges of the QEMU process.

CVE-2019-9824

William Bowling discovered that the SLiRP networking implementation did
not handle some messages properly, which could be triggered to leak
memory via crafted messages.

For Debian 8 "Jessie", these problems have been fixed in version
1:2.1+dfsg-12+deb8u11.