Critical severity · published Aug 15, 2026
CVE-2026-74345
RDMA/siw: Fix endpoint/socket association handling
9.8
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
6c52fdc244b5ccc468006fd65a504d4ee33743c7 before ff584d3735b13a1d7f8cd072f98fea40b6062518; 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before b28d513393f81e2de00f82970487a9d001557e4e; 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before f6183983ce1ff254d629a333739082b39d7c5eb6; 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before b6cf763eee0a932792bef64ceaca568d324192fc; 6c52fdc244b5ccc468006fd65a504d4ee33743c7 before ea4f6f6c53577fb3f05dbd78b15e586772d49831; 5.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74345
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74345
git.kernel.org
https://git.kernel.org/stable/c/b28d513393f81e2de00f82970487a9d001557e4e
git.kernel.org
https://git.kernel.org/stable/c/b6cf763eee0a932792bef64ceaca568d324192fc
git.kernel.org
https://git.kernel.org/stable/c/ea4f6f6c53577fb3f05dbd78b15e586772d49831
git.kernel.org
https://git.kernel.org/stable/c/f6183983ce1ff254d629a333739082b39d7c5eb6
git.kernel.org
https://git.kernel.org/stable/c/ff584d3735b13a1d7f8cd072f98fea40b6062518
More from Linux
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
7.8
CVE-2026-53362
ipv6: account for fraggap on the paged allocation path
7.8
CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place
7.8
CVE-2025-38352
posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()