CVE-2016-7908 — Infinite Loop in Qemu

CWE-835 — Infinite Loop9 documents7 sources
Severity
4.4MEDIUMNVD
OSV5.5
EPSS
0.1%
top 67.69%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
QemuDebian QemuDebian Linux
Timeline
PublishedOct 5
Latest updateMay 13

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HExploitability: 0.8 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/qemu< qemu 1:2.8+dfsg-1 (bookworm)
▶Debianqemu/qemu< 1:2.8+dfsg-1+3
▶Ubuntuqemu/qemu< 2.0.0+dfsg-2ubuntu1.30+1
▶NVDqemu/qemu2.7.1

Also affects: Debian Linux 8.0

Patches

Patch: lists.gnu.org ↗Patch: lists.gnu.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-2f8w-w2fc-fv9w: The mcf_fec_do_tx function in hw/net/mcf_fec↗2022-05-13
▶
OSV
qemu, qemu-kvm vulnerabilities↗2016-11-09
▶
OSV
CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec↗2016-10-05
▶

📋Vendor Advisories

3
Ubuntu
QEMU vulnerabilities↗2016-11-09
▶
Red Hat
Qemu: net: Infinite loop in mcf_fec_do_tx()↗2016-09-21
▶
Debian
CVE-2016-7908: qemu - The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does...↗2016
▶

💬Community

2
Bugzilla
CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx() [fedora-all]↗2016-10-03
▶
Bugzilla
CVE-2016-7908 Qemu: net: Infinite loop in mcf_fec_do_tx()↗2016-04-15
▶