High · published May 1, 2024
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 3.13, < 4.19.313 | 4.19.313 |
| linux/linux_kernel | ≥ 4.20, < 5.4.275 | 5.4.275 |
| linux/linux_kernel | ≥ 5.5, < 5.10.216 | 5.10.216 |
| linux/linux_kernel | ≥ 5.11, < 5.15.157 | 5.15.157 |
| linux/linux_kernel | ≥ 5.16, < 6.1.88 | 6.1.88 |
| linux/linux_kernel | ≥ 6.2, < 6.6.29 | 6.6.29 |
| linux/linux_kernel | ≥ 6.7, < 6.8.8 | 6.8.8 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |