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CVE-2024-27020 In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in…

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.

Affected products and versions

Product	Affected versions	Fixed in
Linux 6.9	earliest → < 6.9	6.9
Linux 6.8	earliest → < 6.8.8	6.8.8
Linux 6.6	earliest → < 6.6.29	6.6.29
Linux 6.1	earliest → < 6.1.88	6.1.88
Linux 5.15	earliest → < 5.15.157	5.15.157
Linux 5.10	earliest → < 5.10.216	5.10.216
Linux 5.4	earliest → < 5.4.275	5.4.275
Linux 4.19	earliest → < 4.19.313	4.19.313
Linux	3.13	No fix stated

Show the 7 other branches

Product	Affected versions	Fixed in
RUGGEDCOM RST2428P 3.1	earliest → < 3.1	3.1
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family	Versions not published
SCALANCE XCM-/XRM-/XCH-/XRH-300 family 3.1	earliest → < 3.1	3.1
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1	earliest → < 1.1.1	1.1.1
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.0 → < 3.1.5	3.1.5
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1	3.1.0 → < 3.1.5	3.1.5
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.0 → < 3.1.5	3.1.5