CVE-2026-74345
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.
CSIRTS triage
- What
- RDMA/siw (Software iWARP) driver has faulty endpoint and socket association handling, allowing incorrect socket operations.
- Who is affected
- Systems using software iWARP RDMA implementations for remote memory access.
- Urgency
- Critical severity (CVSS 9.8); no known exploitation but socket association bugs can lead to arbitrary memory access or code execution.
- Action
- Apply kernel patch that corrects endpoint-to-socket association and validation in RDMA/siw.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
Advisory coverage (2)
- criticalCVE-2026-74345: In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix endpoint/soc…nvd · 2026-08-15
- criticalCVE-2026-74345: RDMA/siw: Fix endpoint/socket association handlingmsrc · 2026-08-11
External references
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