CVE-2016-3961
medium
CVSS v3
5.5
CVSS v4 NEW
—
VIR risk
5.5
Description
Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service (guest OS crash) by attempting to access a hugetlbfs mapped area.
Predictions
Exploit likelihood
55%
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 |
|---|---|---|---|
| debian | bookworm | fixed | 4.5.2-1 |
| debian | bullseye | fixed | 4.5.2-1 |
| debian | forky | fixed | 4.5.2-1 |
| debian | sid | fixed | 4.5.2-1 |
| debian | trixie | fixed | 4.5.2-1 |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.10 | affected | |
| ubuntu | 16.04 | affected | |
References
- http://www.debian.org/security/2016/dsa-3607
- http://www.securityfocus.com/bid/86068
- http://www.securitytracker.com/id/1035569
- http://www.ubuntu.com/usn/USN-3001-1
- http://www.ubuntu.com/usn/USN-3002-1
- http://www.ubuntu.com/usn/USN-3003-1
- http://www.ubuntu.com/usn/USN-3004-1
- http://www.ubuntu.com/usn/USN-3005-1
- http://www.ubuntu.com/usn/USN-3006-1
- http://www.ubuntu.com/usn/USN-3007-1
- http://www.ubuntu.com/usn/USN-3049-1
- http://www.ubuntu.com/usn/USN-3050-1
- http://xenbits.xen.org/xsa/advisory-174.html
- http://xenbits.xen.org/xsa/xsa174.patch
- https://security-tracker.debian.org/tracker/CVE-2016-3961
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.