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CVE-2026-89506

RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR

In the Linux kernel, the following vulnerability has been resolved:

RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR

The original commit missed that three drivers (mthca, irdma, siw) have UHW
data associated with reg_mr that cannot be passed through the ioctl. They
also assume that the udata cannot be NULL, so failing to pass a valid
udata can trigger a NULL udata crash in those drivers.

This never happens in real systems since in rdma-core ibv_cmd_reg_mr_ex()
does not accept a udata and those three drivers don't use it, however a
malicious userspace could trigger it.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 5b2e45049dc06a876bc6b138218ddeb0814502ef
Version < 71d5c41ac583df09a7c32199bef7d42de7267d07
Status affected
Version 5b2e45049dc06a876bc6b138218ddeb0814502ef
Version < 9e71d0f4944ba5641e01db29b3256c963656d671
Status affected
Version 5b2e45049dc06a876bc6b138218ddeb0814502ef
Version < 011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.17
Status affected
Version 0
Version < 6.17
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.4
Status unaffected
Version <= *
Version 7.3-rc1
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 0.17% 0.061
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/71d5c41ac583df09a7c32199bef7d42de7267d07
https://git.kernel.org/stable/c/9e71d0f4944ba5641e01db29b3256c963656d671
https://git.kernel.org/stable/c/011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf