CVE-2016-7908
published 2016-10-05CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets…
PriorityP414medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.41%
33.5th percentile
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| 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 |
| 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_ubuntu5.5MEDIUM
vendor_debian4.4MEDIUM
vendor_redhat4.4MEDIUM
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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: Infinite loop in mcf_fec_do_tx()
vendor_redhat·2016-09-21·CVSS 4.4
CVE-2016-7908 [MEDIUM] CWE-835 Qemu: net: Infinite loop in mcf_fec_do_tx()
Qemu: net: Infinite loop in mcf_fec_do_tx()
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
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)) - N
Debian
CVE-2016-7908: qemu - The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does...
vendor_debian·2016·CVSS 4.4
CVE-2016-7908 [MEDIUM] CVE-2016-7908: qemu - The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does...
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
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-2f8w-w2fc-fv9w: The mcf_fec_do_tx function in hw/net/mcf_fec
ghsa_unreviewed·2022-05-13
CVE-2016-7908 [MEDIUM] CWE-835 GHSA-2f8w-w2fc-fv9w: The mcf_fec_do_tx function in hw/net/mcf_fec
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
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
OSV
CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec
osv·2016-10-05·CVSS 4.4
CVE-2016-7908 [MEDIUM] CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx() [fedora-all]
bugzilla·2016-10-03·CVSS 4.4
CVE-2016-7908 [MEDIUM] CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx() [fedora-all]
CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx() [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 Fedora.
Bugzilla
CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx()
bugzilla·2016-04-15·CVSS 4.4
CVE-2016-7908 [MEDIUM] CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx()
CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx()
Quick Emulator(Qemu) built with the ColdFire Fast Ethernet Controller emulator
support is vulnerable to an infinite loop issue. It could occur while processing
packets on the transmit queue in 'mcf_fec_do_tx'.
A privileged user/process inside guest could use this issue to crash the Qemu process on the host leading to DoS.
Upstream patch
-> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html
Discussion:
Acknowledgments:
Name: Li Qiang (Qihoo 360 Inc.)
---
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1381193]
---
CVE assignment:
http://seclists.org/oss-sec/2016/q4/11
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087ahttp://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlhttp://www.openwall.com/lists/oss-security/2016/10/03/2http://www.openwall.com/lists/oss-security/2016/10/03/5http://www.securityfocus.com/bid/93273https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.htmlhttps://security.gentoo.org/glsa/201611-11http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087ahttp://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlhttp://www.openwall.com/lists/oss-security/2016/10/03/2http://www.openwall.com/lists/oss-security/2016/10/03/5http://www.securityfocus.com/bid/93273https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.htmlhttps://security.gentoo.org/glsa/201611-11
2016-10-05
Published