NetSight
IP …
high8.8

CVE-2024-49936

In the Linux kernel, the following vulnerability has been resolved: net/xen-netback: prevent UAF in xenvif_flush_hash() During the list_for_each_entry_rcu iter…

Impact

In the Linux kernel, the following vulnerability has been resolved: net/xen-netback: prevent UAF in xenvif_flush_hash() During the list_for_each_entry_rcu iteration call of xenvif_flush_hash, kfree_rcu does not exist inside the rcu read critical section, so if kfree_rcu is called when the rcu grace period ends during the iteration, UAF occurs when accessing head->next after the entry becomes free. Therefore, to solve this, you need to change it to list_for_each_entry_safe.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
before 5.10.227
from 5.11 before 5.15.168
from 5.16 before 6.1.113
from 6.2 before 6.6.55
from 6.7 before 6.10.14
from 6.11 before 6.11.3

Weakness classification

CWE-416

References