{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-23278", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.991Z", "datePublished": "2026-03-20T08:08:58.566Z", "dateUpdated": "2026-08-05T12:21:07.131Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:21:07.131Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: always walk all pending catchall elements\n\nDuring transaction processing we might have more than one catchall element:\n1 live catchall element and 1 pending element that is coming as part of the\nnew batch.\n\nIf the map holding the catchall elements is also going away, its\nrequired to toggle all catchall elements and not just the first viable\ncandidate.\n\nOtherwise, we get:\n WARNING: ./include/net/netfilter/nf_tables.h:1281 at nft_data_release+0xb7/0xe0 [nf_tables], CPU#2: nft/1404\n RIP: 0010:nft_data_release+0xb7/0xe0 [nf_tables]\n [..]\n __nft_set_elem_destroy+0x106/0x380 [nf_tables]\n nf_tables_abort_release+0x348/0x8d0 [nf_tables]\n nf_tables_abort+0xcf2/0x3ac0 [nf_tables]\n nfnetlink_rcv_batch+0x9c9/0x20e0 [..]" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "nf_tables catchall element walk breaks early, leaving second catchall element's chain references improperly toggled during abort. Leads to chain use-count underflow and UAF. Deterministic logic error reachable via unprivileged user namespaces." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nf_tables_api.c" ], "versions": [ { "version": "d60be2da67d172aecf866302c91ea11533eca4d9", "lessThan": "c4d4e86fda707d89eaba80e343321737375f8582", "status": "affected", "versionType": "git" }, { "version": "628bd3e49cba1c066228e23d71a852c23e26da73", "lessThan": "4830fb44d12f586f3f544609e086933649a9175a", "status": "affected", "versionType": "git" }, { "version": "628bd3e49cba1c066228e23d71a852c23e26da73", "lessThan": "eb0948fa13298212c5f8b30ee48efdae4389ab09", "status": "affected", "versionType": "git" }, { "version": "628bd3e49cba1c066228e23d71a852c23e26da73", "lessThan": "de47a88c6b807910f05703fb6605f7efdaa11417", "status": "affected", "versionType": "git" }, { "version": "628bd3e49cba1c066228e23d71a852c23e26da73", "lessThan": "77c26b5056d693ffe5e9f040e946251cdb55ae55", "status": "affected", "versionType": "git" }, { "version": "628bd3e49cba1c066228e23d71a852c23e26da73", "lessThan": "7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9", "status": "affected", "versionType": "git" }, { "version": "bc9f791d2593f17e39f87c6e2b3a36549a3705b1", "status": "affected", "versionType": "git" }, { "version": "3c7ec098e3b588434a8b07ea9b5b36f04cef1f50", "status": "affected", "versionType": "git" }, { "version": "a136b7942ad2a50de708f76ea299ccb45ac7a7f9", "status": "affected", "versionType": "git" }, { "version": "25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8", "status": "affected", "versionType": "git" }, { "version": "dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41", "status": "affected", "versionType": "git" }, { "version": "6.1.36", "lessThan": "6.1.177", "status": "affected", "versionType": "semver" }, { "version": "4.19.316", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.262", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "5.10.188", "lessThan": "5.11", "status": "affected", "versionType": "semver" }, { "version": "5.15.121", "lessThan": "5.16", "status": "affected", "versionType": "semver" }, { "version": "6.3.10", "lessThan": "6.4", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nf_tables_api.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.177", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.9", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.36", "versionEndExcluding": "6.1.177" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.144" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.19.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.0" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.316" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.262" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c4d4e86fda707d89eaba80e343321737375f8582" }, { "url": "https://git.kernel.org/stable/c/4830fb44d12f586f3f544609e086933649a9175a" }, { "url": "https://git.kernel.org/stable/c/eb0948fa13298212c5f8b30ee48efdae4389ab09" }, { "url": "https://git.kernel.org/stable/c/de47a88c6b807910f05703fb6605f7efdaa11417" }, { "url": "https://git.kernel.org/stable/c/77c26b5056d693ffe5e9f040e946251cdb55ae55" }, { "url": "https://git.kernel.org/stable/c/7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9" } ], "title": "netfilter: nf_tables: always walk all pending catchall elements", "x_generator": { "engine": "bippy-1.2.0" } } } }