CVE-2025-40149
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
12/11/2025
Last modified:
12/11/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().<br />
<br />
get_netdev_for_sock() is called during setsockopt(),<br />
so not under RCU.<br />
<br />
Using sk_dst_get(sk)->dev could trigger UAF.<br />
<br />
Let&#39;s use __sk_dst_get() and dst_dev_rcu().<br />
<br />
Note that the only ->ndo_sk_get_lower_dev() user is<br />
bond_sk_get_lower_dev(), which uses RCU.