Critical 9.8Published Aug 15, 2026

CVE-2026-74345RDMA/siw: Fix endpoint/socket association handling

Updated under an hour ago (Oct 28, 2026, 6:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before ff584d3735b13a1d7f8cd072f98fea40b6062518; from 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before b28d513393f81e2de00f82970487a9d001557e4e; from 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before f6183983ce1ff254d629a333739082b39d7c5eb6; from 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before b6cf763eee0a932792bef64ceaca568d324192fc; from 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before ea4f6f6c53577fb3f05dbd78b15e586772d49831	CNA record

References

References

https://git.kernel.org/stable/c/ff584d3735b13a1d7f8cd072f98fea40b6062518
https://git.kernel.org/stable/c/b28d513393f81e2de00f82970487a9d001557e4e
https://git.kernel.org/stable/c/f6183983ce1ff254d629a333739082b39d7c5eb6
https://git.kernel.org/stable/c/b6cf763eee0a932792bef64ceaca568d324192fc
https://git.kernel.org/stable/c/ea4f6f6c53577fb3f05dbd78b15e586772d49831

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.