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CVE-2026-97593

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

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 81244074b518aeb90de5f68e7e825564c29c5c50
Version < d0502ed0a1aae97e2ab7a21545903ba612d9f02e
Status affected
Version 81244074b518aeb90de5f68e7e825564c29c5c50
Version < 41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c
Status affected
Version 81244074b518aeb90de5f68e7e825564c29c5c50
Version < 20db6573301e66cd65ebf6c130b6563c69374d9d
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.16
Status affected
Version 0
Version < 6.16
Status unaffected
Version <= 6.18.*
Version 6.18.53
Status unaffected
Version <= 7.2.*
Version 7.2.7
Status unaffected
Version <= *
Version 7.3-rc3
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.086
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/d0502ed0a1aae97e2ab7a21545903ba612d9f02e
https://git.kernel.org/stable/c/41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c
https://git.kernel.org/stable/c/20db6573301e66cd65ebf6c130b6563c69374d9d