VIR Vulnerability Intelligence Relay

CVE-2016-5126

high
Published 2016-06-01 · Modified 2026-05-06
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
7.8

Description

Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.

Predictions

Exploit likelihood
75%
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 with source_tier=community-verified.

OS impact
redhat Red Hat Affected 7 releases
VersionStatusFixed in
7.7 Affected —
7.6 Affected —
7.5 Affected —
7.4 Affected —
7.3 Affected —
7.2 Affected —
7.0 Affected —
suse SUSE Affected 1 release
VersionStatusFixed in
— Affected —
ubuntu Ubuntu Affected 3 releases
VersionStatusFixed in
16.04 Affected —
14.04 Affected —
12.04 Affected —
debian Debian Mixed 6 releases
VersionStatusFixed in
trixie Fixed 1:2.6+dfsg-2
sid Fixed 1:2.6+dfsg-2
forky Fixed 1:2.6+dfsg-2
bullseye Fixed 1:2.6+dfsg-2
bookworm Fixed 1:2.6+dfsg-2
8.0 Affected —

Application impact
VendorProductVersionsFixed
qemuqemu{"endIncluding":"2.6.2"}
redhat redhatopenstack6.0
redhat redhatopenstack7.0
redhat redhatopenstack8
redhat redhatopenstack9
redhat redhatopenstack5.0
redhat redhatvirtualization3.0

References

CWEs

CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.