CVE-2015-8340

4.7 MEDIUM 0.4% exploit odds Fix listed

What it is

The memory_exchange function in common/memory.c in Xen 3.2.x through 4.6.x does not properly release locks, which might allow guest OS administrators to cause a denial of service (deadlock or host crash) via unspecified vectors, related to XENMEM_exchange error handling.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2015-12-17 19:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:34 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.4% in the next 30 days (EPSS).
Severity: 4.7 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2015-12-17 19:59 UTC
Last modified: 2026-06-17 00:34 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-17
Record status: Modified

Affected

Xen 3.2.0
Xen 3.2.1
Xen 3.2.2
Xen 3.2.3
Xen 3.3.0
Xen 3.3.1
Xen 3.3.2
Xen 3.4.0

Attack profile CVSS 2.0 · 4.7

Attack vector: Local
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:L/AC:M/Au:N/C:N/I:N/A:C

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2015-8340.md and follow it. Check whether this project is affected by CVE-2015-8340. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record