CVE-2025-40170 – net: use dst_dev_rcu() in sk_setup_caps()

CVE ID : CVE-2025-40170

Published : Nov. 12, 2025, 11:15 a.m. | 16 minutes ago

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

net: use dst_dev_rcu() in sk_setup_caps()

Use RCU to protect accesses to dst->dev from sk_setup_caps()
and sk_dst_gso_max_size().

Also use dst_dev_rcu() in ip6_dst_mtu_maybe_forward(),
and ip_dst_mtu_maybe_forward().

ip4_dst_hoplimit() can use dst_dev_net_rcu().

Severity: 0.0 | NA

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