Bug 2516840 (CVE-2026-74345) - CVE-2026-74345 kernel: RDMA/siw: Fix endpoint/socket association handling
Summary: CVE-2026-74345 kernel: RDMA/siw: Fix endpoint/socket association handling
Keywords:
Status: NEW
Alias: CVE-2026-74345
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:36 UTC by OSIDB Bzimport
Modified: 2026-08-20 18:24 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 06:36:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/siw: Fix endpoint/socket association handling

Disassociating a socket from an endpoint via siw_socket_disassoc() may
release the last reference on that endpoint and free it. Therefore, don't
clear the endpoints socket pointer after calling that function, but
within.

This fixes a:

  BUG: KASAN: slab-use-after-free in siw_cm_work_handler (drivers/infiniband/sw/siw/siw_cm.c:1053 drivers/infiniband/sw/siw/siw_cm.c:1075)

which occurred after processing a malformed MPA request during connection
establishment, causing the new endpoint to be closed.
Comment 1 Keith Grant 2026-08-20 18:20:28 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081558-CVE-2026-74345-c375@gregkh/T
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