rootpwn

high · CVSS v3 7.1

CVE-2026-93277

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Validate udata before executing comman…

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Validate udata before executing commands The destroy callbacks currently zero the udata output after tearing down driver resources. If the userspace access fails, uverbs preserves the uobject and allows the destroy callback to run again, even though the driver resource has already been freed. Call ib_no_udata_io() before teardown so udata failures are detected while the resource is still intact, then return success after teardown completes. As part of this change, move ib_respond_empty_udata() to the start of the create and modify flows. While this is not strictly required for general create flows, as the core layer unwinds uobjects on failure, it is necessary for create AH. In _rdma_create_ah(), the HW object is otherwise leaked.

Scores

Severity
high
CVSS v2
5.6
CVSS v3
7.1
CVSS v4
—
EPSS
—

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