{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-52924",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-08-21T06:07:11.018Z",
        "datePublished": "2025-02-05T09:07:55.418Z",
        "dateUpdated": "2026-05-11T19:35:43.170Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:35:43.170Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: don't skip expired elements during walk\n\nThere is an asymmetry between commit/abort and preparation phase if the\nfollowing conditions are met:\n\n1. set is a verdict map (\"1.2.3.4 : jump foo\")\n2. timeouts are enabled\n\nIn this case, following sequence is problematic:\n\n1. element E in set S refers to chain C\n2. userspace requests removal of set S\n3. kernel does a set walk to decrement chain->use count for all elements\n   from preparation phase\n4. kernel does another set walk to remove elements from the commit phase\n   (or another walk to do a chain->use increment for all elements from\n    abort phase)\n\nIf E has already expired in 1), it will be ignored during list walk, so its use count\nwon't have been changed.\n\nThen, when set is culled, ->destroy callback will zap the element via\nnf_tables_set_elem_destroy(), but this function is only safe for\nelements that have been deactivated earlier from the preparation phase:\nlack of earlier deactivate removes the element but leaks the chain use\ncount, which results in a WARN splat when the chain gets removed later,\nplus a leak of the nft_chain structure.\n\nUpdate pipapo_get() not to skip expired elements, otherwise flush\ncommand reports bogus ENOENT errors."
                }
            ],
            "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",
                        "net/netfilter/nft_set_hash.c",
                        "net/netfilter/nft_set_pipapo.c",
                        "net/netfilter/nft_set_rbtree.c"
                    ],
                    "versions": [
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "94313a196b44184b5b52c1876da6a537701b425a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "1da4874d05da1526b11b82fc7f3c7ac38749ddf8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "b15ea4017af82011dd55225ce77cce3d4dfc169c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "7c7e658a36f8b1522bd3586d8137e5f93a25ddc5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "59dab3bf0b8fc08eb802721c0532f13dd89209b8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "bd156ce9553dcaf2d6ee2c825d1a5a1718e86524",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0982927e79049675cb6c6c04a0ebb3dad5a434",
                            "lessThan": "24138933b97b055d486e8064b4a1721702442a9b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "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",
                        "net/netfilter/nft_set_hash.c",
                        "net/netfilter/nft_set_pipapo.c",
                        "net/netfilter/nft_set_rbtree.c"
                    ],
                    "versions": [
                        {
                            "version": "4.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.316",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.262",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.198",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.134",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.56",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.11",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "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": "4.1",
                                    "versionEndExcluding": "4.19.316"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "5.4.262"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "5.10.198"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "5.15.134"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.1.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.4.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/94313a196b44184b5b52c1876da6a537701b425a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1da4874d05da1526b11b82fc7f3c7ac38749ddf8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b15ea4017af82011dd55225ce77cce3d4dfc169c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7c7e658a36f8b1522bd3586d8137e5f93a25ddc5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/59dab3bf0b8fc08eb802721c0532f13dd89209b8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bd156ce9553dcaf2d6ee2c825d1a5a1718e86524"
                },
                {
                    "url": "https://git.kernel.org/stable/c/24138933b97b055d486e8064b4a1721702442a9b"
                }
            ],
            "title": "netfilter: nf_tables: don't skip expired elements during walk",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}