tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
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 · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://git.kernel.org/stable/c/13159c7125636371543a82cb7bbae00ab36730cchttps://git.kernel.org/stable/c/2b1bef126bbb8d0da51491357559126d567c1deehttps://git.kernel.org/stable/c/c65f27b9c3be2269918e1cbad6d8884741f835c5https://git.kernel.org/stable/c/e37ca0092ddace60833790b4ad7a390408fb1be9https://git.kernel.org/stable/c/f09cd209359a23f88d4f3fa3d2379d057027e53chttps://git.kernel.org/stable/c/feb474ddbf26b51f462ae2e60a12013bdcfc5407