CVE-2026-89505

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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/60a42d510113f46de47e86a84bf5758597644487
https://git.kernel.org/stable/c/edae84e5461749ed9adf9fcf5c6e075381040ac3

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-11 20:19

NVD link : CVE-2026-89505

Mitre link : CVE-2026-89505

CVE.ORG link : CVE-2026-89505

JSON object : View

Products Affected

No product.

CWE

No CWE.

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