CVE-2016-7909

low-risk
Published 2016-10-05

The pcnet_rdra_addr function in hw/net/pcnet.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0.

Do I need to act?

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0.14% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.4/10 Medium
LOCAL / LOW complexity

Affected Products (2)

Affected Vendors

Qemu Debian

References (14)

Mailing List http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
Mailing List http://www.openwall.com/lists/oss-security/2016/10/03/3
Mailing List http://www.openwall.com/lists/oss-security/2016/10/03/6
Third Party Advisory http://www.securityfocus.com/bid/93275
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
Mailing List https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg07942.html
Third Party Advisory https://security.gentoo.org/glsa/201611-11
Mailing List http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
Mailing List http://www.openwall.com/lists/oss-security/2016/10/03/3
Mailing List http://www.openwall.com/lists/oss-security/2016/10/03/6
Third Party Advisory http://www.securityfocus.com/bid/93275
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
Mailing List https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg07942.html
Third Party Advisory https://security.gentoo.org/glsa/201611-11
23
/ 100
low-risk
Severity 15/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 7/34 · Low