CVE-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, 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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.4 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
redhatCNA
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CVEADP
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---
Base Score
CVSS 3.x
EPSS Score
Percentile: 33%
VendorProductVersion
qemuqemu
𝑥
≤ 2.7.1
debiandebian_linux
8.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
qemu
bullseye
1:5.2+dfsg-11+deb11u3
fixed
bullseye (security)
1:5.2+dfsg-11+deb11u2
fixed
bookworm
1:7.2+dfsg-7+deb12u7
fixed
sid
1:9.1.1+ds-2
fixed
trixie
1:9.1.1+ds-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
qemu
yakkety
Fixed 1:2.6.1+dfsg-0ubuntu5.1
released
xenial
Fixed 1:2.5+dfsg-5ubuntu10.6
released
trusty
Fixed 2.0.0+dfsg-2ubuntu1.30
released
precise
dne
qemu-kvm
yakkety
dne
xenial
dne
trusty
dne
precise
Fixed 1.0+noroms-0ubuntu14.31
released
Common Weakness Enumeration
References
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
http://www.openwall.com/lists/oss-security/2016/10/03/2
http://www.openwall.com/lists/oss-security/2016/10/03/5
http://www.securityfocus.com/bid/93273
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html
https://security.gentoo.org/glsa/201611-11
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
http://www.openwall.com/lists/oss-security/2016/10/03/2
http://www.openwall.com/lists/oss-security/2016/10/03/5
http://www.securityfocus.com/bid/93273
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html
https://security.gentoo.org/glsa/201611-11