qemu: DoS via large option request

The Network Block Device NBD server in Quick Emulator QEMU, is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other...

Qemu: stack buffer overflow in NBD server triggered via long export name

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, allowing causing an out-of-bounds stack write in the qemu process. If NBD server requires...

qemu: DoS via large option request

The Network Block Device NBD server in Quick Emulator QEMU, is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other...

Qemu: stack buffer overflow in NBD server triggered via long export name

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, allowing causing an out-of-bounds stack write in the qemu process. If NBD server requires...

openSUSE Security Update : qemu (openSUSE-2018-291) (Spectre)

This update for qemu fixes the following issues : This update has the next round of Spectre v2 related patches, which now integrate with corresponding changes in libvirt. CVE-2017-5715 bsc1068032 The January 2018 release of qemu initially addressed the Spectre v2 vulnerability for KVM guests by...

SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:0762-1) (Spectre)

This update for qemu fixes the following issues: This update has the next round of Spectre v2 related patches, which now integrate with corresponding changes in libvirt. CVE-2017-5715 bsc1068032 The January 2018 release of qemu initially addressed the Spectre v2 vulnerability for KVM guests by...

USN-3575-1 qemu vulnerabilities

It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. CVE-2017-11334 David Buchanan discovered that QEMU...

Moderate: Red Hat Security Advisory: qemu-kvm-rhev security update

An update for qemu-kvm-rhev is now available for Red Hat Enterprise Linux OpenStack Platform 7.0 Kilo for RHEL 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, ...

Qemu: qemu-nbd crashes due to undefined I/O coroutine

An assertion-failure flaw was found in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to...

Qemu: qemu-nbd crashes due to undefined I/O coroutine

An assertion-failure flaw was found in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to...

Qemu: qemu-nbd: server breaks with SIGPIPE upon client abort

Quick Emulator QEMU built with the Network Block Device NBD Server support is vulnerable to a crash via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd...

Qemu: qemu-nbd: server breaks with SIGPIPE upon client abort

Quick Emulator QEMU built with the Network Block Device NBD Server support is vulnerable to a crash via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd...

Qemu: qemu-nbd crashes due to undefined I/O coroutine

An assertion-failure flaw was found in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to...

Moderate: Red Hat Security Advisory: qemu-kvm-rhev security and bug fix update

An update for qemu-kvm-rhev is now available for Red Hat OpenStack Platform 8.0 Liberty. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

Qemu: qemu-nbd crashes due to undefined I/O coroutine

An assertion-failure flaw was found in the Network Block Device NBD server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to...

Qemu: qemu-nbd: server breaks with SIGPIPE upon client abort

Quick Emulator QEMU built with the Network Block Device NBD Server support is vulnerable to a crash via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd...

[SECURITY] Fedora 25 Update: fedora-arm-installer-2.1-1.fc25

Allows one to first select a source image local or remote. The image must be a binary file containing: MBR + Partitions + File Systems + Data. A destination block device should then be selected for final installation...

[SECURITY] Fedora 26 Update: fedora-arm-installer-2.1-1.fc26

Allows one to first select a source image local or remote. The image must be a binary file containing: MBR + Partitions + File Systems + Data. A destination block device should then be selected for final installation...

[SECURITY] Fedora 27 Update: fedora-arm-installer-2.1-1.fc27

Allows one to first select a source image local or remote. The image must be a binary file containing: MBR + Partitions + File Systems + Data. A destination block device should then be selected for final installation...

QEMU 'b/nbd/server.c' Denial of Service Vulnerability

QEMU aka Quick Emulator is a set of simulation processor software developed by French programmer Fabrice Bellard. The software is fast and cross-platform. A denial of service vulnerability exists in QEMU 'b/nbd/server.c'. An attacker can exploit the vulnerability to cause a denial of service...