CVE-2024-27020

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < 939109c0a8e2a006a6cc8209e262d25065f4403aaffected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < b38a133d37fa421c8447b383d788c9cc6f5cb34caffected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < 934e66e231cff2b18faa2c8aad0b8cec13957e05affected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < 0b6de00206adbbfc6373b3ae38d2a6f197987907affected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < 8d56bad42ac4c43c6c72ddd6a654a2628bf839c5affected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < a9ebf340d123ae12582210407f879d6a5a1bc25baffected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < 01f1a678b05ade4b1248019c2dcca773aebbeb7faffected
LinuxLinuxef1f7df9170dbd875ce198ba84e6ab80f6fc139e < f969eb84ce482331a991079ab7a5c4dc3b7f89bfaffected
LinuxLinux3.13affected
LinuxLinux0 < 3.13unaffected
LinuxLinux4.19.313 <= 4.19.*unaffected
LinuxLinux5.4.275 <= 5.4.*unaffected
LinuxLinux5.10.216 <= 5.10.*unaffected
LinuxLinux5.15.157 <= 5.15.*unaffected
LinuxLinux6.1.88 <= 6.1.*unaffected
LinuxLinux6.6.29 <= 6.6.*unaffected
LinuxLinux6.8.8 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

CVE Program Container

Additional References

Additional References

References