Riskcovery

CVE-2026-97593

iommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX

State
Published
Severity
Not scored
Published
Sep 25, 2026
Updated
Oct 19, 2026
Reserved
Sep 24, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 81244074b518aeb90de5f68e7e825564c29c5c50 to before d0502ed0a1aae97e2ab7a21545903ba612d9f02eAffected
  • 81244074b518aeb90de5f68e7e825564c29c5c50 to before 41b5e0ce6801bf04d8fd3bca46e8c393349ebd5cAffected
  • 81244074b518aeb90de5f68e7e825564c29c5c50 to before 20db6573301e66cd65ebf6c130b6563c69374d9dAffected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2.7 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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