CVE-2014-7840
high
CVSS v3
—
CVSS v4 NEW
—
VIR risk
7.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Red Hat Affected 6 releases
| Version | Status | Fixed in |
|---|---|---|
| 7.7 | Affected | — |
| 7.6 | Affected | — |
| 7.5 | Affected | — |
| 7.4 | Affected | — |
| 7.3 | Affected | — |
| 7.0 | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.1+dfsg-8 |
| sid | Fixed | 2.1+dfsg-8 |
| forky | Fixed | 2.1+dfsg-8 |
| bullseye | Fixed | 2.1+dfsg-8 |
| bookworm | Fixed | 2.1+dfsg-8 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| qemu | qemu | {"endIncluding":"2.1.3"} | |
| 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
- https://security-tracker.debian.org/tracker/CVE-2014-7840
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.