CVE-2026-97593
iommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: iommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX When using a 5-level translation table via ZPCI_TABLE_TYPE_RFX get_rso_from_iova() returns NULL when the region-first entry is invalid. Yet in get_rto_from_iova() the region-second origin rso is not checked to be non-NULL before accessing rso[rsx] leading to a NULL pointer dereference instead of a NULL return when iova_to_phys() is called on a unmapped IOVA. Fix this by adding the missing NULL check.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 25, 2026 |
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Affected Versions
Linux / Linux
81244074b518aeb90de5f68e7e825564c29c5c50 < d0502ed0a1aae97e2ab7a21545903ba612d9f02e 81244074b518aeb90de5f68e7e825564c29c5c50 < 41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c 81244074b518aeb90de5f68e7e825564c29c5c50 < 20db6573301e66cd65ebf6c130b6563c69374d9d
Linux / Linux
6.16