{"id":"CVE-2025-38162","revision":"4339bbf8268046ef82df6cf19a4745c3","records":[{"revision":"4339bbf8268046ef82df6cf19a4745c3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38162","aliases":[],"title":"netfilter: nft_set_pipapo: prevent overflow in lookup table allocation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo: prevent overflow in lookup table allocation\n\nWhen calculating the lookup table size, ensure the following\nmultiplication does not overflow:\n\n- desc->field_len[] maximum value is U8_MAX multiplied by\n  NFT_PIPAPO_GROUPS_PER_BYTE(f) that can be 2, worst case.\n- NFT_PIPAPO_BUCKETS(f->bb) is 2^8, worst case.\n- sizeof(unsigned long), from sizeof(*f->lt), lt in\n  struct nft_pipapo_field.\n\nThen, use check_mul_overflow() to multiply by bucket size and then use\ncheck_add_overflow() to the alignment for avx2 (if needed). Finally, add\nlt_size_check_overflow() helper and use it to consolidate this.\n\nWhile at it, replace leftover allocation using the GFP_KERNEL to\nGFP_KERNEL_ACCOUNT for consistency, in pipapo_resize().","state":0,"publishedAt":"2025-07-03T08:36:03.731+00:00","modifiedAt":"2026-10-15T21:52:09.997+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/netfilter/nft_set_pipapo.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3c4287f62044a90e73a561aa05fc46e62da173da\",\n                            \"lessThan\": \"91edc076439c9e2f34b176149f1c84a47a8ec32f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c4287f62044a90e73a561aa05fc46e62da173da\",\n                            \"lessThan\": \"a9e757473561da93c6a4136f0e59aba91ec777fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c4287f62044a90e73a561aa05fc46e62da173da\",\n                            \"lessThan\": \"c1360ac8156c0a3f2385baef91d8d26fd9d39701\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c4287f62044a90e73a561aa05fc46e62da173da\",\n                            \"lessThan\": \"43fe1181f738295624696ae9ff611790edb65b5e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c4287f62044a90e73a561aa05fc46e62da173da\",\n                            \"lessThan\": \"4c5c6aa9967dbe55bd017bb509885928d0f31206\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/netfilter/nft_set_pipapo.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.167\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.125\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.34\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.3\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/91edc076439c9e2f34b176149f1c84a47a8ec32f","https://git.kernel.org/stable/c/a9e757473561da93c6a4136f0e59aba91ec777fc","https://git.kernel.org/stable/c/c1360ac8156c0a3f2385baef91d8d26fd9d39701","https://git.kernel.org/stable/c/43fe1181f738295624696ae9ff611790edb65b5e","https://git.kernel.org/stable/c/4c5c6aa9967dbe55bd017bb509885928d0f31206"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38162","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38162","identifiers":["CVE-2025-38162"]},"retained":false,"historicalAffected":[]}],"coverage":[]}