CVE-2017-7228

high

Published 2017-04-04 · Modified 2026-05-13

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CVSS v3

8.2

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.2

Description

An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.

Predictions

Exploit likelihood

78%

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.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-41870 local multiple verified

Google Security Research · 2017-04-11

Xen - Broken Check in 'memory_exchange()' Permits PV Guest Breakout

Source code queued for fetch — refresh in a moment.

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`4.8.1-1`
sid	Fixed	`4.8.1-1`
forky	Fixed	`4.8.1-1`
bullseye	Fixed	`4.8.1-1`
bookworm	Fixed	`4.8.1-1`

References

CWEs

CWE-129

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.