7.5

CVE-2025-58148

x86: Incorrect input sanitisation in Viridian hypercalls

[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]

Some Viridian hypercalls can specify a mask of vCPU IDs as an input, in
one of three formats.  Xen has boundary checking bugs with all three
formats, which can cause out-of-bounds reads and writes while processing
the inputs.

 * CVE-2025-58147.  Hypercalls using the HV_VP_SET Sparse format can
   cause vpmask_set() to write out of bounds when converting the bitmap
   to Xen's format.

 * CVE-2025-58148.  Hypercalls using any input format can cause
   send_ipi() to read d->vcpu[] out-of-bounds, and operate on a wild
   vCPU pointer.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Xen ≫ Xen Version >= 4.15.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.078
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

http://www.openwall.com/lists/oss-security/2025/10/21/1
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