CVE-2015-5166
high
CVSS v3
—
CVSS v4 NEW
—
VIR risk
7.2
Description
Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
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
| OS | Version | Status | Fixed in |
|---|---|---|---|
| fedora | 21 | affected | |
| fedora | 22 | affected | |
| debian | bookworm | fixed | 1:2.4+dfsg-1a |
| debian | bullseye | fixed | 1:2.4+dfsg-1a |
| debian | forky | fixed | 1:2.4+dfsg-1a |
| debian | sid | fixed | 1:2.4+dfsg-1a |
| debian | trixie | fixed | 1:2.4+dfsg-1a |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html
- http://www.securityfocus.com/bid/76152
- http://www.securitytracker.com/id/1033175
- http://xenbits.xen.org/xsa/advisory-139.html
- https://security-tracker.debian.org/tracker/CVE-2015-5166
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.