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() 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.

CVSS 3.1

7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-25)

CWE

CWE-362

Published

2024-05-01

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/01f1a678b05ade4b1248019c2dcca773aebbeb7f
• https://git.kernel.org/stable/c/0b6de00206adbbfc6373b3ae38d2a6f197987907
• https://git.kernel.org/stable/c/8d56bad42ac4c43c6c72ddd6a654a2628bf839c5
• https://git.kernel.org/stable/c/934e66e231cff2b18faa2c8aad0b8cec13957e05
• https://git.kernel.org/stable/c/939109c0a8e2a006a6cc8209e262d25065f4403a

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