Home/CVE/The pcnet_rdra_addr function in hw/net/pcnet.c in QEMU (aka Quick Emulator) allows local guest OS administrators to caus
CVE

CVE-2016-7909

The pcnet_rdra_addr function in hw/net/pcnet.c in QEMU (aka Quick Emulator) allows local guest OS administrators to caus

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.

MEDIUM · CVSS 4.4 EPSS 0.00136
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
▤

Affected Products & Versions

2
qemu<= 2.7.1
debian linuxall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
▣

Scoring & Timeline

4.4
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Oct 2016 · 04:59 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

13
suse-csafopenSUSE-SU-2024:11287-1
suse-csafopenSUSE-SU-2024:11520-1
suse-csafSUSE-SU-2016:3273-1
suse-csafSUSE-SU-2016:3174-1
suse-csafSUSE-SU-2016:3156-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/03/3Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/03/6Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93275Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlThird Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg07942.htmlMailing ListPatchVendor Advisory
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