CVE-2024-27020
Description
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.
How to fix
- linux linux_kernel4.19.313, 5.4.275, 5.10.216, 5.15.157, 6.1.88, 6.6.29, 6.8.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.13 ≤ v < 4.19.313, 4.20 ≤ v < 5.4.275, 5.5 ≤ v < 5.10.216, 5.11 ≤ v < 5.15.157, 5.16 ≤ v < 6.1.88, 6.2 ≤ v < 6.6.29, 6.7 ≤ v < 6.8.8, 6.9 | 4.19.313, 5.4.275, 5.10.216, 5.15.157, 6.1.88, 6.6.29, 6.8.8 |
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