net: phonet: free phonet_device after RCU grace period
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
net: phonet: free phonet_device after RCU grace period
phonet_device_destroy() removes a phonet_device from the per-net device
list with list_del_rcu(), but frees it immediately. RCU readers walking
the same list can still hold a pointer to the object after it has been
removed, leading to a slab-use-after-free.
Use kfree_rcu(), matching the lifetime rule already used by
phonet_address_del() for the same object type.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0https://git.kernel.org/stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296https://git.kernel.org/stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906ahttps://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9