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 products
linux: linux kernel
References8
- git.kernel.org/stable/c/13159c7125636371543a82cb7bbae00ab36730cc Patch
- git.kernel.org/stable/c/2b1bef126bbb8d0da51491357559126d567c1dee Patch
- git.kernel.org/stable/c/c65f27b9c3be2269918e1cbad6d8884741f835c5 Patch
- git.kernel.org/stable/c/e37ca0092ddace60833790b4ad7a390408fb1be9 Patch
- git.kernel.org/stable/c/f09cd209359a23f88d4f3fa3d2379d057027e53c Patch
- git.kernel.org/stable/c/feb474ddbf26b51f462ae2e60a12013bdcfc5407 Patch
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-457936.html
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 7 · as of 10 November 2026
- CWE
- CWE-416
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