CVE-2016-1922
published 2016-12-29CVE-2016-1922: QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.43%
35.4th percentile
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | qemu | < qemu 1:2.5+dfsg-4 (bookworm) | qemu 1:2.5+dfsg-4 (bookworm) |
| qemu | qemu | <= 2.5.1.1 | — |
| qemu | qemu | >= 0 < 1:2.5+dfsg-4 | 1:2.5+dfsg-4 |
| qemu | qemu | >= 0 < 1:2.5+dfsg-4 | 1:2.5+dfsg-4 |
| qemu | qemu | >= 0 < 1:2.5+dfsg-4 | 1:2.5+dfsg-4 |
| qemu | qemu | >= 0 < 1:2.5+dfsg-4 | 1:2.5+dfsg-4 |
| qemu | qemu | >= 0 < 2.0.0+dfsg-2ubuntu1.22 | 2.0.0+dfsg-2ubuntu1.22 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv6.0MEDIUM
vendor_ubuntu6.0MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2016-02-03·CVSS 6.0
CVE-2015-7549 [MEDIUM] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Qinghao Tang discovered that QEMU incorrectly handled PCI MSI-X support. An
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 15.10. (CVE-2015-7549)
Lian Yihan discovered that QEMU incorrectly handled the VNC server. A
remote attacker could use this issue to cause QEMU to crash, resulting in a
denial of service. (CVE-2015-8504)
Felix Wilhelm discovered a race condition in the Xen paravirtualized
drivers which can cause double fetch vulnerabilities. An attacker in the
paravirtualized guest could exploit this flaw to cause a denial of service
(crash the host) or potentially execute arbitrary code on th
Debian
CVE-2016-1922: qemu - QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows gue...
vendor_debian·2016·CVSS 5.5
CVE-2016-1922 [MEDIUM] CVE-2016-1922: qemu - QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows gue...
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
Scope: local
bookworm: resolved (fixed in 1:2.5+dfsg-4)
bullseye: resolved (fixed in 1:2.5+dfsg-4)
forky: resolved (fixed in 1:2.5+dfsg-4)
sid: resolved (fixed in 1:2.5+dfsg-4)
trixie: resolved (fixed in 1:2.5+dfsg-4)
Red Hat
Qemu: i386: null pointer dereference in vapic_write()
vendor_redhat·2015-12-18·CVSS 5.5
CVE-2016-1922 [MEDIUM] CWE-476 Qemu: i386: null pointer dereference in vapic_write()
Qemu: i386: null pointer dereference in vapic_write()
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
A NULL-pointer dereference flaw was found in the QEMU emulator built with TPR optimization for 32-bit Windows guests support. The flaw occurs when doing I/O-port write operations from the HMP interface. The 'current_cpu' value remains null because it is not called from the cpu_exec() loop, and dereferencing it results in the flaw. An attacker with access to the
GHSA
GHSA-pp27-442h-qhx9: QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw
ghsa_unreviewed·2022-05-13
CVE-2016-1922 [MEDIUM] CWE-476 GHSA-pp27-442h-qhx9: QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
OSV
CVE-2016-1922: QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw
osv·2016-12-29·CVSS 5.5
CVE-2016-1922 [MEDIUM] CVE-2016-1922: QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
OSV
qemu, qemu-kvm vulnerabilities
osv·2016-02-03·CVSS 6.0
CVE-2015-7549 [MEDIUM] qemu, qemu-kvm vulnerabilities
qemu, qemu-kvm vulnerabilities
Qinghao Tang discovered that QEMU incorrectly handled PCI MSI-X support. An
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 15.10. (CVE-2015-7549)
Lian Yihan discovered that QEMU incorrectly handled the VNC server. A
remote attacker could use this issue to cause QEMU to crash, resulting in a
denial of service. (CVE-2015-8504)
Felix Wilhelm discovered a race condition in the Xen paravirtualized
drivers which can cause double fetch vulnerabilities. An attacker in the
paravirtualized guest could exploit this flaw to cause a denial of service
(crash the host) or potentially execute arbitrary code on the host.
(CVE-2015-8550)
Qinghao Tang discovered th
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-1922 xen: qemu: Null pointer dereference in vapic_write() [fedora-all]
bugzilla·2015-12-18·CVSS 5.5
CVE-2016-1922 [MEDIUM] CVE-2016-1922 xen: qemu: Null pointer dereference in vapic_write() [fedora-all]
CVE-2016-1922 xen: qemu: Null pointer dereference in vapic_write() [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions o
Bugzilla
CVE-2016-1922 qemu: Null pointer dereference in vapic_write() [fedora-all]
bugzilla·2015-12-18·CVSS 5.5
CVE-2016-1922 [MEDIUM] CVE-2016-1922 qemu: Null pointer dereference in vapic_write() [fedora-all]
CVE-2016-1922 qemu: Null pointer dereference in vapic_write() [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fed
Bugzilla
CVE-2016-1922 Qemu: i386: null pointer dereference in vapic_write()
bugzilla·2015-11-20·CVSS 5.5
CVE-2016-1922 [MEDIUM] CVE-2016-1922 Qemu: i386: null pointer dereference in vapic_write()
CVE-2016-1922 Qemu: i386: null pointer dereference in vapic_write()
Qemu emulator built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference.
A user/process could use this flaw to crash the Qemu instance, resulting in DoS issue.
Upstream patch:
-> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html
Reference:
-> http://www.openwall.com/lists/oss-security/2016/01/16/6
Discussion:
Created xen tracking bugs for this issue:
Affects: fedora-all [bug 1292767]
---
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1292766]
---
Statement:
This issue d
http://www.debian.org/security/2016/dsa-3469http://www.debian.org/security/2016/dsa-3470http://www.debian.org/security/2016/dsa-3471http://www.openwall.com/lists/oss-security/2016/01/16/1http://www.openwall.com/lists/oss-security/2016/01/16/6http://www.securityfocus.com/bid/81058https://bugzilla.redhat.com/show_bug.cgi?id=1283934https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.htmlhttps://security.gentoo.org/glsa/201604-01http://www.debian.org/security/2016/dsa-3469http://www.debian.org/security/2016/dsa-3470http://www.debian.org/security/2016/dsa-3471http://www.openwall.com/lists/oss-security/2016/01/16/1http://www.openwall.com/lists/oss-security/2016/01/16/6http://www.securityfocus.com/bid/81058https://bugzilla.redhat.com/show_bug.cgi?id=1283934https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.htmlhttps://security.gentoo.org/glsa/201604-01
2016-12-29
Published