[SECURITY] [DLA 1927-1] qemu security update
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Package : qemu
Version : 1:2.1+dfsg-12+deb8u12
CVE ID : CVE-2016-5126 CVE-2016-5403 CVE-2017-9375 CVE-2019-12068
CVE-2019-12155 CVE-2019-13164 CVE-2019-14378 CVE-2019-15890
Debian Bug : 826151 832619 864219 929353 931351 933741 933742 939868 939869
Several vulnerabilities were found in QEMU, a fast processor emulator
(notably used in KVM and Xen HVM virtualization).
CVE-2016-5126
Heap-based buffer overflow in the iscsi_aio_ioctl function in
block/iscsi.c in QEMU allows local guest OS users to cause a
denial of service (QEMU process crash) or possibly execute
arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.
CVE-2016-5403
The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows
local guest OS administrators to cause a denial of service (memory
consumption and QEMU process crash) by submitting requests without
waiting for completion.
CVE-2017-9375
QEMU, when built with USB xHCI controller emulator support, allows
local guest OS privileged users to cause a denial of service
(infinite recursive call) via vectors involving control transfer
descriptors sequencing.
CVE-2019-12068
QEMU scsi disk backend: lsi: exit infinite loop while executing
script
CVE-2019-12155
interface_release_resource in hw/display/qxl.c in QEMU has a NULL
pointer dereference.
CVE-2019-13164
qemu-bridge-helper.c in QEMU does not ensure that a network
interface name (obtained from bridge.conf or a --br=bridge option)
is limited to the IFNAMSIZ size, which can lead to an ACL bypass.
CVE-2019-14378
ip_reass in ip_input.c in libslirp 4.0.0 has a heap-based buffer
overflow via a large packet because it mishandles a case involving
the first fragment.
CVE-2019-15890
libslirp 4.0.0, as used in QEMU, has a use-after-free in ip_reass
in ip_input.c.
For Debian 8 "Jessie", these problems have been fixed in version
1:2.1+dfsg-12+deb8u12.
We recommend that you upgrade your qemu packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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