{"id":"CVE-2024-41042","state":"PUBLISHED","title":"netfilter: nf_tables: prefer nft_chain_validate","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: prefer nft_chain_validate\n\nnft_chain_validate already performs loop detection because a cycle will\nresult in a call stack overflow (ctx->level >= NFT_JUMP_STACK_SIZE).\n\nIt also follows maps via ->validate callback in nft_lookup, so there\nappears no reason to iterate the maps again.\n\nnf_tables_check_loops() and all its helper functions can be removed.\nThis improves ruleset load time significantly, from 23s down to 12s.\n\nThis also fixes a crash bug. Old loop detection code can result in\nunbounded recursion:\n\nBUG: TASK stack guard page was hit at ....\nOops: stack guard page: 0000 [#1] PREEMPT SMP KASAN\nCPU: 4 PID: 1539 Comm: nft Not tainted 6.10.0-rc5+ #1\n[..]\n\nwith a suitable ruleset during validation of register stores.\n\nI can't see any actual reason to attempt to check for this from\nnft_validate_register_store(), at this point the transaction is still in\nprogress, so we don't have a full picture of the rule graph.\n\nFor nf-next it might make sense to either remove it or make this depend\non table->validate_state in case we could catch an error earlier\n(for improved error reporting to userspace).","publishedAt":"2024-07-29T14:31:55.530Z","updatedAt":"2026-05-11T20:25:02.881Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"1947e4c3346faa8ac7e343652c0fd3b3e394202f","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"cd4348e0a50286282c314ad6d2b0740e7c812c24","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"31c35f9f89ef585f1edb53e17ac73a0ca4a9712b","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"b6b6e430470e1c3c5513311cb35a15a205595abe","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"717c91c6ed73e248de6a15bc53adefb81446c9d0","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"9df785aeb7dcc8efd1d4110bb27d26005298ebae","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"cff3bd012a9512ac5ed858d38e6ed65f6391008c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"4.19.320","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.282","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.224","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.165","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.105","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.46","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.9.10","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]}],"references":["https://git.kernel.org/stable/c/1947e4c3346faa8ac7e343652c0fd3b3e394202f","https://git.kernel.org/stable/c/cd4348e0a50286282c314ad6d2b0740e7c812c24","https://git.kernel.org/stable/c/31c35f9f89ef585f1edb53e17ac73a0ca4a9712b","https://git.kernel.org/stable/c/8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e","https://git.kernel.org/stable/c/b6b6e430470e1c3c5513311cb35a15a205595abe","https://git.kernel.org/stable/c/717c91c6ed73e248de6a15bc53adefb81446c9d0","https://git.kernel.org/stable/c/9df785aeb7dcc8efd1d4110bb27d26005298ebae","https://git.kernel.org/stable/c/cff3bd012a9512ac5ed858d38e6ed65f6391008c","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/41xxx/CVE-2024-41042.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-41042","state":"PUBLISHED","datePublished":"2024-07-29T14:31:55.530Z","dateUpdated":"2026-05-11T20:25:02.881Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-07-12T12:17:45.624Z"},"containers":{"cna":{"title":"netfilter: nf_tables: prefer nft_chain_validate","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: prefer nft_chain_validate\n\nnft_chain_validate already performs loop detection because a cycle will\nresult in a call stack overflow (ctx->level >= NFT_JUMP_STACK_SIZE).\n\nIt also follows maps via ->validate callback in nft_lookup, so there\nappears no reason to iterate the maps again.\n\nnf_tables_check_loops() and all its helper functions can be removed.\nThis improves ruleset load time significantly, from 23s down to 12s.\n\nThis also fixes a crash bug. Old loop detection code can result in\nunbounded recursion:\n\nBUG: TASK stack guard page was hit at ....\nOops: stack guard page: 0000 [#1] PREEMPT SMP KASAN\nCPU: 4 PID: 1539 Comm: nft Not tainted 6.10.0-rc5+ #1\n[..]\n\nwith a suitable ruleset during validation of register stores.\n\nI can't see any actual reason to attempt to check for this from\nnft_validate_register_store(), at this point the transaction is still in\nprogress, so we don't have a full picture of the rule graph.\n\nFor nf-next it might make sense to either remove it or make this depend\non table->validate_state in case we could catch an error earlier\n(for improved error reporting to userspace)."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"1947e4c3346faa8ac7e343652c0fd3b3e394202f","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"cd4348e0a50286282c314ad6d2b0740e7c812c24","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"31c35f9f89ef585f1edb53e17ac73a0ca4a9712b","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"b6b6e430470e1c3c5513311cb35a15a205595abe","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"717c91c6ed73e248de6a15bc53adefb81446c9d0","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"9df785aeb7dcc8efd1d4110bb27d26005298ebae","versionType":"git"},{"version":"20a69341f2d00cd042e81c82289fba8a13c05a25","status":"affected","lessThan":"cff3bd012a9512ac5ed858d38e6ed65f6391008c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"4.19.320","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.282","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.224","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.165","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.105","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.46","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.9.10","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1947e4c3346faa8ac7e343652c0fd3b3e394202f"},{"url":"https://git.kernel.org/stable/c/cd4348e0a50286282c314ad6d2b0740e7c812c24"},{"url":"https://git.kernel.org/stable/c/31c35f9f89ef585f1edb53e17ac73a0ca4a9712b"},{"url":"https://git.kernel.org/stable/c/8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e"},{"url":"https://git.kernel.org/stable/c/b6b6e430470e1c3c5513311cb35a15a205595abe"},{"url":"https://git.kernel.org/stable/c/717c91c6ed73e248de6a15bc53adefb81446c9d0"},{"url":"https://git.kernel.org/stable/c/9df785aeb7dcc8efd1d4110bb27d26005298ebae"},{"url":"https://git.kernel.org/stable/c/cff3bd012a9512ac5ed858d38e6ed65f6391008c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:25:02.881Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"4.19.320"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.4.282"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.10.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.15.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.1.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.6.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.9.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.10"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE 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