CVE-2026-23450
kernel: net/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 3, 2026
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel's net/smc component. A remote attacker could exploit a race condition during the concurrent closing of an SMC listen socket. This could lead to a NULL pointer dereference or a use-after-free vulnerability in the smc_tcp_syn_recv_sock() function, potentially causing a system crash and a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.4CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
CWE-476 · NULL Pointer Dereference