CVE-2016-9923
published 2016-12-23CVE-2016-9923: Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
1.21%
65.4th percentile
Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | qemu | < qemu 1:2.8+dfsg-1 (bookworm) | qemu 1:2.8+dfsg-1 (bookworm) |
| qemu | qemu | <= 2.7.1 | — |
| qemu | qemu | >= 0 < 1:2.8+dfsg-1 | 1:2.8+dfsg-1 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-1 | 1:2.8+dfsg-1 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-1 | 1:2.8+dfsg-1 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-1 | 1:2.8+dfsg-1 |
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
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
Qemu: char: use-after-free issue during hotplug and unplugging device
vendor_redhat·2016-11-24·CVSS 5.5
CVE-2016-9923 [MEDIUM] CWE-416 Qemu: char: use-after-free issue during hotplug and unplugging device
Qemu: char: use-after-free issue during hotplug and unplugging device
Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.
Package: kvm (Red Hat Enterprise Linux 5) - Not affected
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Package: qemu-kvm (Red Hat Enterprise Linux 6) - Not affected
Package: qemu-kvm (Red Hat Enterprise Linux 7) - Will not fix
Package: qemu-kvm-rhev (Red Hat Enterprise Linux 7) - Will not fix
Package: qemu-kvm-rhev (Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)) - Will not fix
Package: qemu-kvm-rhev (Red Hat Enterprise Linux Ope
Debian
CVE-2016-9923: qemu - Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to ...
vendor_debian·2016·CVSS 5.5
CVE-2016-9923 [MEDIUM] CVE-2016-9923: qemu - Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to ...
Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.
Scope: local
bookworm: resolved (fixed in 1:2.8+dfsg-1)
bullseye: resolved (fixed in 1:2.8+dfsg-1)
forky: resolved (fixed in 1:2.8+dfsg-1)
sid: resolved (fixed in 1:2.8+dfsg-1)
trixie: resolved (fixed in 1:2.8+dfsg-1)
GHSA
GHSA-chcq-mx34-rm7h: Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue
ghsa_unreviewed·2022-05-13
CVE-2016-9923 [MEDIUM] CWE-416 GHSA-chcq-mx34-rm7h: Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue
Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.
OSV
CVE-2016-9923: Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue
osv·2016-12-23·CVSS 5.5
CVE-2016-9923 [MEDIUM] CVE-2016-9923: Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue
Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-9923 xen: Qemu: char: use-after-free issue during hotplug and unplugging device [fedora-all]
bugzilla·2016-12-08·CVSS 5.5
CVE-2016-9923 [MEDIUM] CVE-2016-9923 xen: Qemu: char: use-after-free issue during hotplug and unplugging device [fedora-all]
CVE-2016-9923 xen: Qemu: char: use-after-free issue during hotplug and unplugging device [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 multipl
Bugzilla
CVE-2016-9923 Qemu: char: use-after-free issue during hotplug and unplugging device
bugzilla·2016-12-08·CVSS 5.5
CVE-2016-9923 [MEDIUM] CVE-2016-9923 Qemu: char: use-after-free issue during hotplug and unplugging device
CVE-2016-9923 Qemu: char: use-after-free issue during hotplug and unplugging device
Quick Emulator(Qemu) built with the 'chardev' backend support is vulnerable
to a use after free issue. It could occur while repeatedly hot-plugging and
unplugging 'chardev' device in the guest.
A guest user/process could use this flaw to crash a Qemu process on the host
resulting in DoS.
Upstream patch:
-> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05597.html
-> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=a4afa548fc6dd9842ed86639b4d37d4d1c4ad480
Reference:
-> http://www.openwall.com/lists/oss-security/2016/12/08/11
Discussion:
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1402968]
---
Created xen tracking bugs for this issue:
Affects: fedora-all [bug 1402972]
Bugzilla
CVE-2016-9923 Qemu: char: use-after-free issue during hotplug and unplugging device [fedora-all]
bugzilla·2016-12-08·CVSS 5.5
CVE-2016-9923 [MEDIUM] CVE-2016-9923 Qemu: char: use-after-free issue during hotplug and unplugging device [fedora-all]
CVE-2016-9923 Qemu: char: use-after-free issue during hotplug and unplugging device [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 sup
2016-12-23
Published