Vulnerability Monitor

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CVE-2016-7907

The imx_fec_do_tx function in hw/net/imx_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.

Published

2016-10-05T16:59:10.070

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 4.4 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	qemu	qemu	≤ 2.8.1.1	Yes
Application	qemu	qemu	2.9.0	Yes
Application	qemu	qemu	2.9.0	Yes
Application	qemu	qemu	2.9.0	Yes
Application	qemu	qemu	2.9.0	Yes
Application	qemu	qemu	2.9.0	Yes
Application	qemu	qemu	2.9.0	Yes

References

http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/10/03/1 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/10/03/4 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/93274 Third Party Advisory, VDB Entry ([email protected])
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html Mailing List, Patch, Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/201611-11 Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/10/03/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/10/03/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/93274 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html Mailing List, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201611-11 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)