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CVE-2026-89505

RDMA/uverbs: Guard legacy bundles without method_elm

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

RDMA/uverbs: Guard legacy bundles without method_elm

The legacy write() path dispatches through a uverbs_api_write_method, but
the uverbs_attr_bundle passed to provider code does not have an ioctl
method element. If malformed provider input causes the common uverbs
validation code to emit an error message, uverbs_get_handler_fn()
dereferences the uninitialized method_elm pointer.

Initialize method_elm explicitly for legacy bundles and make
uverbs_get_handler_fn() return NULL when no ioctl method is present. The
legacy dispatcher continues to use its local write method, while the ioctl
path continues to use the registered ioctl handler.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 7122ff96068a03595bde2fbafaca82ca2ed8084e
Version < edae84e5461749ed9adf9fcf5c6e075381040ac3
Status affected
Version 7122ff96068a03595bde2fbafaca82ca2ed8084e
Version < 60a42d510113f46de47e86a84bf5758597644487
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.1
Status affected
Version 0
Version < 7.1
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 0.16% 0.058
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/edae84e5461749ed9adf9fcf5c6e075381040ac3
https://git.kernel.org/stable/c/60a42d510113f46de47e86a84bf5758597644487