High · published November 12, 2025
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.18, < 5.15.199 | 5.15.199 |
| linux/linux_kernel | ≥ 5.16, < 6.1.161 | 6.1.161 |
| linux/linux_kernel | ≥ 6.2, < 6.6.121 | 6.6.121 |
| linux/linux_kernel | ≥ 6.7, < 6.12.66 | 6.12.66 |
| linux/linux_kernel | ≥ 6.13, < 6.17.3 | 6.17.3 |