CVE-2016-7908

Severity

21%

Complexity

39%

Confidentiality

48%

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.

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 3.0 Base Score 4.4. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 2.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P).

Overview

First reported 8 years ago

2016-10-05 16:59:00

Last updated 6 years ago

2018-12-01 11:29:00

Affected Software

QEMU

References

http://git.qemu.org/?p=qemu.git;a=commit;h=070c4b92b8cd5390889716677a0b92444d6e087a

Issue Tracking, Patch

openSUSE-SU-2016:3237

[oss-security] 20161003 CVE request Qemu: net: Infinite loop in mcf_fec_do_tx

Mailing List, Third Party Advisory

[oss-security] 20161003 Re: CVE request Qemu: net: Infinite loop in mcf_fec_do_tx

Mailing List, Third Party Advisory

93273

[debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update

[qemu-devel] 20160922 [PATCH v2] net: mcf: limit buffer descriptor count

Mailing List, Patch, Vendor Advisory

GLSA-201611-11

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