CVE-2025-40149

HIGH

Linux Kernel 4.18-6.17.2 - Use-After-Free in TLS Socket Option Handling

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock(). get_netdev_for_sock() is called during setsockopt(), so not under RCU. Using sk_dst_get(sk)->dev could trigger UAF. Let's use __sk_dst_get() and dst_dev_rcu(). Note that the only ->ndo_sk_get_lower_dev() user is bond_sk_get_lower_dev(), which uses RCU.

References (6)

Core 6

Scores

CVSS v3 7.8
EPSS 0.0014
EPSS Percentile 3.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (20)
linux/Kernel 4.18.0 - 5.15.199linux
linux/Kernel 5.16.0 - 6.1.161linux
linux/Kernel 6.13.0 - 6.17.3linux
linux/Kernel 6.2.0 - 6.6.121linux
linux/Kernel 6.7.0 - 6.12.66linux
Linux/Linux < 4.18
Linux/Linux 4.18
Linux/Linux 5.15.199 - 5.15.*
Linux/Linux 6.1.161 - 6.1.*
Linux/Linux 6.12.66 - 6.12.*
... and 10 more
Published Nov 12, 2025
Tracked Since Feb 18, 2026