CVE-2014-7840

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-12-12 · updated 2026-06-17
Weakness: CWE-20

Description

The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data.

Affected products

QEMU: through 2.1.3
RedHat Enterprise Linux Desktop: 7.0
RedHat Enterprise Linux Eus: 7.3, 7.4, 7.5, 7.6, 7.7
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Server Aus: 7.3, 7.4, 7.6, 7.7
RedHat Enterprise Linux Workstation: 7.0
RedHat Virtualization: 3.0

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=0be839a2701369f669532ea5884c15bead1c6e08
http://rhn.redhat.com/errata/RHSA-2015-0349.html
http://rhn.redhat.com/errata/RHSA-2015-0624.html
http://thread.gmane.org/gmane.comp.emulators.qemu/306117
https://bugzilla.redhat.com/show_bug.cgi?id=1163075
https://exchange.xforce.ibmcloud.com/vulnerabilities/99194
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=0be839a2701369f669532ea5884c15bead1c6e08
http://rhn.redhat.com/errata/RHSA-2015-0349.html
http://rhn.redhat.com/errata/RHSA-2015-0624.html
http://thread.gmane.org/gmane.comp.emulators.qemu/306117
https://bugzilla.redhat.com/show_bug.cgi?id=1163075
https://exchange.xforce.ibmcloud.com/vulnerabilities/99194

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