CVE-2025-58149When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have.
Updated under an hour ago ()
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It affects xen. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allows the domain itself to map the memory in the page-tables. For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-672
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
xen xen xen:xen | from 4.0.0 | NVD |
References
- https://xenbits.xenproject.org/xsa/advisory-476.htmlpatch, vendor-advisory
- http://www.openwall.com/lists/oss-security/2025/10/24/1mailing-list, patch, third-party-advisory
- http://xenbits.xen.org/xsa/advisory-476.htmlpatch, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.