CVE-2025-40149
tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/feb474ddbf26b51f462ae2e60a12013bdcfc5407
- https://git.kernel.org/stable/c/c65f27b9c3be2269918e1cbad6d8884741f835c5
- https://git.kernel.org/stable/c/e37ca0092ddace60833790b4ad7a390408fb1be9
- https://git.kernel.org/stable/c/13159c7125636371543a82cb7bbae00ab36730cc
- https://git.kernel.org/stable/c/f09cd209359a23f88d4f3fa3d2379d057027e53c
References (8)
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