CVE-2015-8552

medium

Published 2016-04-13 · Modified 2026-05-06

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CVSS v3

4.4

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

4.4

Description

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service (disk consumption) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."

Predictions

Exploit likelihood

44%

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

Ubuntu Affected 1 release

Version	Status	Fixed in
12.04	Affected	—

Debian Mixed 6 releases

Version	Status	Fixed in
trixie	Fixed	`4.3.3-3`
sid	Fixed	`4.3.3-3`
forky	Fixed	`4.3.3-3`
bullseye	Fixed	`4.3.3-3`
bookworm	Fixed	`4.3.3-3`
6.0	Affected	—

References

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.