CVE-2026-74345
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel, a vulnerability in the RDMA/siw driver was fixed that caused a use-after-free when disassociating a socket from an endpoint. The issue occurred during processing of a malformed MPA request, potentially leading to closure of the new endpoint and access to freed memory.
Risk Assessment
The vulnerability could lead to system crashes or potential exploitation by a remote attacker in environments using iWARP.
Recommendation
It is recommended to update the Linux kernel to a version with the fix and restrict access to RDMA services to trusted networks.
Original NVD description (English source)
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.