CVE-2016-5126
high
CVSS v3
7.8
CVSS v4 NEW
—
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 withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | 8.0 | affected | |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 16.04 | affected | |
| rhel | 7.0 | affected | |
| rhel | 7.2 | affected | |
| rhel | 7.3 | affected | |
| rhel | 7.4 | affected | |
| rhel | 7.5 | affected | |
| rhel | 7.6 | affected | |
| rhel | 7.7 | affected | |
| debian | bookworm | fixed | 1:2.6+dfsg-2 |
| debian | bullseye | fixed | 1:2.6+dfsg-2 |
| debian | forky | fixed | 1:2.6+dfsg-2 |
| debian | sid | fixed | 1:2.6+dfsg-2 |
| debian | trixie | fixed | 1:2.6+dfsg-2 |
References
- https://www.suse.com/security/cve/CVE-2016-5126.html
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=a6b3167fa0e825aebb5a7cd8b437b6d41584a196
- http://rhn.redhat.com/errata/RHSA-2016-1606.html
- http://rhn.redhat.com/errata/RHSA-2016-1607.html
- http://rhn.redhat.com/errata/RHSA-2016-1653.html
- http://rhn.redhat.com/errata/RHSA-2016-1654.html
- http://rhn.redhat.com/errata/RHSA-2016-1655.html
- http://rhn.redhat.com/errata/RHSA-2016-1756.html
- http://rhn.redhat.com/errata/RHSA-2016-1763.html
- http://www.openwall.com/lists/oss-security/2016/05/30/6
- http://www.openwall.com/lists/oss-security/2016/05/30/7
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.securityfocus.com/bid/90948
- http://www.ubuntu.com/usn/USN-3047-1
- http://www.ubuntu.com/usn/USN-3047-2
- https://bugzilla.redhat.com/show_bug.cgi?id=1340924
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
- https://lists.gnu.org/archive/html/qemu-block/2016-05/msg00779.html
- https://security.gentoo.org/glsa/201609-01
- https://security-tracker.debian.org/tracker/CVE-2016-5126
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.