CVE-2026-92488

Published: September 19, 2026Last modified: September 28, 2026

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: complete object teardown when the destroy command fails erdma_destroy_qp(), erdma_destroy_cq(), erdma_dereg_mr(), and erdma_destroy_ah() returned early when erdma_post_cmd_wait() failed, leaking the queue buffers, MTTs, doorbells and the STAG, QPN, CQN and AHN identifiers. A command timeout clears ERDMA_CMDQ_STATE_OK_BIT and permanently disables the command queue, so no retry can succeed; the RDMA core keeps the object after a failed destructor and forced uverbs cleanup then nulls the pointers, making the resources unreachable. Warn on failure but release every software-owned resource and return success, since during terminal destruction the hardware command result is only diagnostic.

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/334145d683ad3e31d052247f10807f2ebc950351
• https://git.kernel.org/stable/c/5fcfc988ecf3e2bbe308b95c2c0d2f011d9afabe
• https://git.kernel.org/stable/c/652befcba956ef357f480525ccbe25c59bc81d4d
• https://git.kernel.org/stable/c/ce7d205c264665517c25e8a3231cf2d0c2443e3c