CVE-2024-27020High· 7.8▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
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.
linux_kernel >= 3.13, < 4.19.313linux_kernel >= 4.20, < 5.4.275linux_kernel >= 5.5, < 5.10.216linux_kernel >= 5.11, < 5.15.157linux_kernel >= 5.16, < 6.1.88linux_kernel >= 6.2, < 6.6.29linux_kernel >= 6.7, < 6.8.8linux_kernel = 6.9Upgrade past the affected range:
linux_kernel 6.8.8Connected by shared product, vendor, weakness, or advisory.
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