Bugzilla – Bug 1223813
VUL-0: CVE-2024-27019: kernel: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get()
Last modified: 2024-07-19 17:55:13 UTC
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get() nft_unregister_obj() can concurrent with __nft_obj_type_get(), and there is not any protection when iterate over nf_tables_objects list in __nft_obj_type_get(). Therefore, there is potential data-race of nf_tables_objects list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_objects list in __nft_obj_type_get(), and use rcu_read_lock() in the caller nft_obj_type_get() to protect the entire type query process. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-27019 https://www.cve.org/CVERecord?id=CVE-2024-27019 https://git.kernel.org/stable/c/379bf7257bc5f2a1b1ca8514e08a871b7bf6d920 https://git.kernel.org/stable/c/4ca946b19caf655a08d5e2266d4d5526025ebb73 https://git.kernel.org/stable/c/ad333578f736d56920e090d7db1f8dec891d815e https://git.kernel.org/stable/c/d78d867dcea69c328db30df665be5be7d0148484 https://git.kernel.org/stable/c/df7c0fb8c2b9f9cac65659332581b19682a71349 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-27019.mbox https://bugzilla.redhat.com/show_bug.cgi?id=2278258 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/