CVE-2025-1713: deadlock potential with VT-d and legacy PCI device pass-through

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-17 · updated 2026-06-17
Weakness: CWE-833

Description

When setting up interrupt remapping for legacy PCI(-X) devices, including PCI(-X) bridges, a lookup of the upstream bridge is required. This lookup, itself involving acquiring of a lock, is done in a context where acquiring that lock is unsafe. This can lead to a deadlock.

Affected products

xen: from 4.0.0

References

https://xenbits.xenproject.org/xsa/advisory-467.html
http://www.openwall.com/lists/oss-security/2025/02/27/1
http://www.openwall.com/lists/oss-security/2025/02/27/3
http://www.openwall.com/lists/oss-security/2025/02/28/1
http://xenbits.xen.org/xsa/advisory-467.html

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