CVE-2026-74345

Critical

Description

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductLinux
PublishedAug 15, 2026
First seenAug 15, 2026

How to fix

Update
  • Linux Linuxf27da1192118fb6a7e73a85cfe4b02ccf8298619, ff584d3735b13a1d7f8cd072f98fea40b6062518, b28d513393f81e2de00f82970487a9d001557e4e, f6183983ce1ff254d629a333739082b39d7c5eb6, b6cf763eee0a932792bef64ceaca568d324192fc, ea4f6f6c53577fb3f05dbd78b15e586772d49831 or later

Affected products

ProductAffected versionsFixed in
Linux Linux6c52fdc244b5ccc468006fd65a504d4ee33743c7 ≤ v < f27da1192118fb6a7e73a85cfe4b02ccf8298619, 6c52fdc244b5ccc468006fd65a504d4ee33743c7 ≤ v < ff584d3735b13a1d7f8cd072f98fea40b6062518, 6c52fdc244b5ccc468006fd65a504d4ee33743c7 ≤ v < b28d513393f81e2de00f82970487a9d001557e4e, 6c52fdc244b5ccc468006fd65a504d4ee33743c7 ≤ v < f6183983ce1ff254d629a333739082b39d7c5eb6, 6c52fdc244b5ccc468006fd65a504d4ee33743c7 ≤ v < b6cf763eee0a932792bef64ceaca568d324192fc, 6c52fdc244b5ccc468006fd65a504d4ee33743c7 ≤ v < ea4f6f6c53577fb3f05dbd78b15e586772d49831, 5.3f27da1192118fb6a7e73a85cfe4b02ccf8298619, ff584d3735b13a1d7f8cd072f98fea40b6062518, b28d513393f81e2de00f82970487a9d001557e4e, f6183983ce1ff254d629a333739082b39d7c5eb6, b6cf763eee0a932792bef64ceaca568d324192fc, ea4f6f6c53577fb3f05dbd78b15e586772d49831

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CVE-2026-74345 · Linux · Dark Radar