NetSight
IP …
high7.8

CVE-2024-27020

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr(…

Impact

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.13 before 4.19.313
from 4.20 before 5.4.275
from 5.5 before 5.10.216
from 5.11 before 5.15.157
from 5.16 before 6.1.88
from 6.2 before 6.6.29

Weakness classification

CWE-362

References