CVE-2025-40168

HighCVSS 8.1/10Last modified Oct 19, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

smc_clc_prfx_match() is called from smc_listen_work() and not under RCU nor RTNL.

Using sk_dst_get(sk)->dev could trigger UAF.

Let's use __sk_dst_get() and dst_dev_rcu().

Note that the returned value of smc_clc_prfx_match() is not used in the caller.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
LinuxLinux>= a046d57da19f812216f393e7c535f5858f793ac3, < 3f119c37aa293af41400cccb3d89fab8dcf774b0; >= a046d57da19f812216f393e7c535f5858f793ac3, < 4f5f52a5842937f945582a93cb9daed9ea526fee; >= a046d57da19f812216f393e7c535f5858f793ac3, < 326e5cf301d0bec0a672aa834d8254c4f9df6255; >= a046d57da19f812216f393e7c535f5858f793ac3, < d26e80f7fb62d77757b67a1b94e4ac756bc9c658; >= a046d57da19f812216f393e7c535f5858f793ac3, < 235f81045c008169cc4e1955b4a64e118eebe61b
LinuxLinux4.11

References

Timeline

Published
Nov 12, 2025
Last modified
Oct 19, 2026
NVD status
Deferred

Related CVEs from 2025

CVE-2025-401697.8In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative offsets for ALU ops When verifying BPF programs, CVE-2025-40176.5A vulnerability classified as problematic was found in 20120630 Novel-Plus up to 0e156c04b4b7ce0563bef6c97af4476fcda8f160. This vulnerabilitCVE-2025-401707.8In the Linux kernel, the following vulnerability has been resolved: net: use dst_dev_rcu() in sk_setup_caps() Use RCU to protect accesses CVE-2025-401717.5In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: move lsop put work to nvmet_fc_ls_req_op It’s possible for mCVE-2025-401727.8In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages() CVE-2025-401737.8In the Linux kernel, the following vulnerability has been resolved: net/ip6_tunnel: Prevent perpetual tunnel growth Similarly to ipv4 tunnCVE-2025-401747.8In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix SMP ordering in switch_mm_irqs_off() Stephen noted that itCVE-2025-40175In the Linux kernel, the following vulnerability has been resolved: idpf: cleanup remaining SKBs in PTP flows When the driver requests Tx CVE-2025-401769.8In the Linux kernel, the following vulnerability has been resolved: tls: wait for pending async decryptions if tls_strp_msg_hold fails AsyCVE-2025-40177In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Fix bootlog initialization ordering As soon as we queue MHCVE-2025-40178In the Linux kernel, the following vulnerability has been resolved: pid: Add a judgment for ns null in pid_nr_ns __task_pid_nr_ns CVE-2025-40179In the Linux kernel, the following vulnerability has been resolved: ext4: verify orphan file size is not too big In principle orphan file
CVE-2025-40168: High severity, CVSS 8.1 | Vulnix