CVE-2023-52522: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: net: fix possible store tearing in neigh_periodic_work() While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list. Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing. I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().

Affected products

• Linux Linux Kernel: from 2.6.37, before 5.4.258 (fixed in 5.4.258); from 5.5, before 5.10.198 (fixed in 5.10.198); from 5.11, before 5.15.135 (fixed in 5.15.135); from 5.16, before 6.1.57 (fixed in 6.1.57); from 6.2, before 6.5.7 (fixed in 6.5.7); version 6.6 only

Published 2024-03-02. Last modified 2026-08-04.