CVE-2016-9382
high
CVSS v3
7.8
CVSS v4 NEW
—
VIR risk
7.8
Description
Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.
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 | bookworm | fixed | 4.8.0-1 |
| debian | bullseye | fixed | 4.8.0-1 |
| debian | forky | fixed | 4.8.0-1 |
| debian | sid | fixed | 4.8.0-1 |
| debian | trixie | fixed | 4.8.0-1 |
References
- http://www.securityfocus.com/bid/94470
- http://www.securitytracker.com/id/1037341
- http://xenbits.xen.org/xsa/advisory-192.html
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX218775
- https://www.suse.com/security/cve/CVE-2016-9382.html
- https://security-tracker.debian.org/tracker/CVE-2016-9382
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.