CVE-2016-6834
published 2016-12-10CVE-2016-6834: The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of…
PriorityP413medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.40%
32.5th percentile
The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | qemu | < qemu 1:2.6+dfsg-3.1 (bookworm) | qemu 1:2.6+dfsg-3.1 (bookworm) |
| qemu | qemu | <= 2.6.2 | — |
| qemu | qemu | — | — |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 2.0.0+dfsg-2ubuntu1.30 | 2.0.0+dfsg-2ubuntu1.30 |
| qemu | qemu | >= 0 < 1:2.5+dfsg-5ubuntu10.6 | 1:2.5+dfsg-5ubuntu10.6 |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/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_redhat9.8CRITICAL
vendor_ubuntu5.5MEDIUM
vendor_debian4.4MEDIUM
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Red Hat
php: Use After Free in unserialize()
vendor_redhat·2016-12-08·CVSS 9.8
CVE-2016-9936 [CRITICAL] CWE-416 php: Use After Free in unserialize()
php: Use After Free in unserialize()
The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted serialized data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6834.
Package: php (Red Hat Enterprise Linux 5) - Will not fix
Package: php53 (Red Hat Enterprise Linux 5) - Will not fix
Package: php (Red Hat Enterprise Linux 6) - Will not fix
Package: php (Red Hat Enterprise Linux 7) - Will not fix
Package: php (Red Hat OpenShift Enterprise 2) - Will not fix
Package: rh-php56-php (Red Hat Software Collections) - Will not fix
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2016-11-09·CVSS 5.5
CVE-2016-5403 [MEDIUM] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A
privileged attacker inside the guest could use this issue to cause QEMU to
consume resources, resulting in a denial of service. (CVE-2016-5403)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. 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, Ubuntu 16.04 LTS and Ubuntu 16.10.
(CVE-2016-6833, CVE-2016-6834, CVE-2016-6888)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. A privileged attacker inside the guest could use
this issue
Red Hat
Qemu: net: vmxnet3: an infinite loop during packet fragmentation
vendor_redhat·2016-08-09·CVSS 4.4
CVE-2016-6834 [MEDIUM] CWE-835 Qemu: net: vmxnet3: an infinite loop during packet fragmentation
Qemu: net: vmxnet3: an infinite loop during packet fragmentation
The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
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 OpenStack Platform 6 (Ju
Debian
CVE-2016-6834: qemu - The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka ...
vendor_debian·2016·CVSS 4.4
CVE-2016-6834 [MEDIUM] CVE-2016-6834: qemu - The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka ...
The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
Scope: local
bookworm: resolved (fixed in 1:2.6+dfsg-3.1)
bullseye: resolved (fixed in 1:2.6+dfsg-3.1)
forky: resolved (fixed in 1:2.6+dfsg-3.1)
sid: resolved (fixed in 1:2.6+dfsg-3.1)
trixie: resolved (fixed in 1:2.6+dfsg-3.1)
GHSA
GHSA-7mrf-3fph-7jw4: The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt
ghsa_unreviewed·2022-05-13
CVE-2016-6834 [MEDIUM] CWE-120 GHSA-7mrf-3fph-7jw4: The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt
The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
OSV
CVE-2016-6834: The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt
osv·2016-12-10·CVSS 4.4
CVE-2016-6834 [MEDIUM] CVE-2016-6834: The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt
The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
OSV
qemu, qemu-kvm vulnerabilities
osv·2016-11-09·CVSS 5.5
CVE-2016-5403 [MEDIUM] qemu, qemu-kvm vulnerabilities
qemu, qemu-kvm vulnerabilities
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A
privileged attacker inside the guest could use this issue to cause QEMU to
consume resources, resulting in a denial of service. (CVE-2016-5403)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. 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, Ubuntu 16.04 LTS and Ubuntu 16.10.
(CVE-2016-6833, CVE-2016-6834, CVE-2016-6888)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of se
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-6834 Qemu: net: vmxnet3: an infinite loop during packet fragmentation [fedora-all]
bugzilla·2016-08-22·CVSS 4.4
CVE-2016-6834 [MEDIUM] CVE-2016-6834 Qemu: net: vmxnet3: an infinite loop during packet fragmentation [fedora-all]
CVE-2016-6834 Qemu: net: vmxnet3: an infinite loop during packet fragmentation [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 supporte
Bugzilla
CVE-2016-6834 Qemu: net: vmxnet3: an infinite loop during packet fragmentation
bugzilla·2016-08-22·CVSS 4.4
CVE-2016-6834 [MEDIUM] CVE-2016-6834 Qemu: net: vmxnet3: an infinite loop during packet fragmentation
CVE-2016-6834 Qemu: net: vmxnet3: an infinite loop during packet fragmentation
Quick Emulator(Qemu) built with the VMWARE VMXNET3 NIC device support,
with network abstraction layer is vulnerable to an infinite loop issue.
It could occur while fragmenting packets in the device.
A privileged user inside guest could use this flaw to crash the Qemu instance
resulting in DoS.
Upstream patch:
-> http://git.qemu.org/?p=qemu.git;a=commit;h=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05
Reference:
-> http://www.openwall.com/lists/oss-security/2016/08/18/7
Discussion:
Acknowledgments:
Name: Li Qiang (Qihoo 360 Inc.)
---
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1368991]
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05http://www.openwall.com/lists/oss-security/2016/08/11/8http://www.openwall.com/lists/oss-security/2016/08/18/7http://www.securityfocus.com/bid/92446https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01601.htmlhttps://security.gentoo.org/glsa/201609-01http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05http://www.openwall.com/lists/oss-security/2016/08/11/8http://www.openwall.com/lists/oss-security/2016/08/18/7http://www.securityfocus.com/bid/92446https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01601.htmlhttps://security.gentoo.org/glsa/201609-01
2016-12-10
Published