CVE-2016-6888

Integer overflow in the nettxpktinit function in hw/net/nettxpkt.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service QEMU process crash via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference...

CVE-2016-7422

CVE-2016-7422 affects QEMU’s virtio/virtio.c: virtqueue_map_desc allows a local guest OS administrator to trigger a NULL pointer dereference by using a large I/O descriptor buffer length, leading to QEMU process crash. Remediation in connected docs shows fixes via rebases to QEMU 2.9.0 (RHSA-2017...

CVE-2016-6834

CVE-2016-6834 affects QEMU (net_tx_pkt_do_sw_fragmentation in hw/net/net_tx_pkt.c). The issue allows a local guest OS administrator to trigger a denial of service by sending a zero-length current fragment length, causing an infinite loop and QEMU process crash. Connected documents confirm this CV...

ALPINE-CVE-2016-9106

Memory leak in the v9fswrite function in hw/9pfs/9p.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service memory consumption by leveraging failure to free an IO vector...

ALPINE-CVE-2016-9105

Memory leak in the v9fslink function in hw/9pfs/9p.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service memory consumption via vectors involving a reference to the source fid object...

DEBIAN-CVE-2016-9105

Memory leak in the v9fslink function in hw/9pfs/9p.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service memory consumption via vectors involving a reference to the source fid object...

ALPINE-CVE-2016-9104

Multiple integer overflows in the 1 v9fsxattrread and 2 v9fsxattrwrite functions in hw/9pfs/9p.c in QEMU aka Quick Emulator allow local guest OS administrators to cause a denial of service QEMU process crash via a crafted offset, which triggers an out-of-bounds access...

DEBIAN-CVE-2016-9102

Memory leak in the v9fsxattrcreate function in hw/9pfs/9p.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service memory consumption and QEMU process crash via a large number of Txattrcreate messages with the same fid number...

CVE-2016-9102

CVE-2016-9102 is a memory-leak vulnerability in QEMU's 9pfs/9p.c v9fs_xattrcreate path. The issue allows a local privileged user (guest) to trigger memory consumption escalating to a DoS by sending a large number of Txattrcreate messages with the same fid. Affected component: hw/9pfs/9p.c (v9fs_x...

CVE-2016-9105

CVE-2016-9105 applies to QEMU, describing a memory leak in the v9fs_link function of hw/9pfs/9p.c that can be triggered by a reference to the source fid object, leading to denial of service via memory consumption. The IBM PowerKVM bulletin notes a fix in PowerKVM: version 3.1.0.2 (and PowerKVM 2....

CVE-2016-9101

CVE-2016-9101 affects QEMU’s i8255x (PRO100) NIC emulation in hw/net/eepro100.c. A memory leak can be triggered by repeatedly unplugging the NIC, causing memory consumption and QEMU process crash (DoS) from a local privileged user. Public advisories (Debian, SUSE, IBM PowerKVM) confirm the issue ...

CVE-2016-9103

CVE-2016-9103 affects QEMU’s 9pfs/v9fs_xattrcreate in hw/9pfs/9p.c. The vulnerability allows local authenticated guests to obtain sensitive host heap memory information by reading xattribute values before writing to them. Technical context and host-memory disclosure are supported by connected sou...

CVE-2016-9911

Quick Emulator Qemu built with the USB EHCI Emulation support is vulnerable to a memory leakage issue. It could occur while processing packet data in 'ehciinittransfer'. A guest user/process could use this issue to leak host memory, resulting in DoS for a host...

Debian Security Advisory DSA 3729-1 (xen - security update)

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2016-7777 XSA-190 Jan Beulich from SUSE discovered that Xen does not properly honor CR0.TS and CR0.EM for x86 HVM guests, potentially allowi...

FreeBSD : xen-kernel -- x86 null segments not always treated as unusable (50ac2e96-ba4d-11e6-ae1b-002590263bf5)

The Xen Project reports : The Xen x86 emulator erroneously failed to consider the unusability of segments when performing memory accesses. The intended behaviour is as follows: The user data segment %ds, %es, %fs and %gs selectors may be NULL in 32-bit to prevent access. In 64-bit, NULL has a...

Debian DLA-720-1 : xen security update

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems : CVE-2016-9379, CVE-2016-9380 XSA-198 pygrub, the boot loader emulator, fails to quote or sanity check its results when reporting them to its...

CVE-2016-9380

The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file...

CVE-2016-9386

The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values...

x86 null segments not always treated as unusable

ISSUE DESCRIPTION The Xen x86 emulator erroneously failed to consider the unusability of segments when performing memory accesses. The intended behaviour is as follows: The user data segment %ds, %es, %fs and %gs selectors may be NULL in 32-bit to prevent access. In 64-bit, NULL has a special...

Debian DSA-3712-1 : terminology - security update

Nicolas Braud-Santoni discovered that incorrect sanitising of character escape sequences in the Terminology terminal emulator may result in the execution of arbitrary commands. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extract...