Bug 2536397 (CVE-2026-92488) - CVE-2026-92488 kernel: RDMA/erdma: complete object teardown when the destroy command fails
Summary: CVE-2026-92488 kernel: RDMA/erdma: complete object teardown when the destroy ...
Keywords:
Status: NEW
Alias: CVE-2026-92488
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 17:43 UTC by OSIDB Bzimport
Modified: 2026-10-05 14:00 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-17 17:43:54 UTC
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.


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