UNKNOWN NVD
CVE-2026-97593
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
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.
References
- https://git.kernel.org/stable/c/20db6573301e66cd65ebf6c130b6563c69374d9d
- https://git.kernel.org/stable/c/41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c
- https://git.kernel.org/stable/c/d0502ed0a1aae97e2ab7a21545903ba612d9f02e
This unknown severity vulnerability was published on 2026-09-25 via NVD.
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