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Vulnerability record · CVE-2015-3456 · published 13 May 2015

CVE-2015-3456: Qemu memory buffer overflow vulnerability

Qemu · Qemu

The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM.

7.7 CVSS 2.0 High EPSS 15% · top 3.3% CWE-119 · Memory buffer overflow
7.7CVSS 2.0 base score
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
96References
17 Jun 2026Last modified by NVD

Description

The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM.

AV:A/AC:L/Au:S/C:C/I:C/A:C

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=e907746266721f305d67bc0718795fedee2e824c
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10693
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158072.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00019.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00042.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00001.html
http://lists.opensuse.org/opensuse-updates/2015-08/msg00021.html
http://marc.info/?l=bugtraq&m=143229451215900&w=2
http://marc.info/?l=bugtraq&m=143387998230996&w=2
http://rhn.redhat.com/errata/RHSA-2015-0998.html
http://rhn.redhat.com/errata/RHSA-2015-0999.html
http://rhn.redhat.com/errata/RHSA-2015-1000.html
http://rhn.redhat.com/errata/RHSA-2015-1001.html
http://rhn.redhat.com/errata/RHSA-2015-1002.html
http://rhn.redhat.com/errata/RHSA-2015-1003.html
http://rhn.redhat.com/errata/RHSA-2015-1004.html
http://rhn.redhat.com/errata/RHSA-2015-1011.html
http://support.citrix.com/article/CTX201078
http://venom.crowdstrike.com/
http://www.debian.org/security/2015/dsa-3259
http://www.debian.org/security/2015/dsa-3262
http://www.debian.org/security/2015/dsa-3274
http://www.fortiguard.com/advisory/2015-05-19-cve-2015-3456-venom-vulnerability
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.securityfocus.com/bid/74640
http://www.securitytracker.com/id/1032306
http://www.securitytracker.com/id/1032311
http://www.securitytracker.com/id/1032917
http://www.ubuntu.com/usn/USN-2608-1
http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-438937.htm
http://xenbits.xen.org/xsa/advisory-133.html
https://access.redhat.com/articles/1444903
https://bto.bluecoat.com/security-advisory/sa95
https://kb.juniper.net/JSA10783
https://kc.mcafee.com/corporate/index?page=content&id=SB10118

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Source: NIST National Vulnerability Database (record CVE-2015-3456), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.