CVE-2026-23278 (GCVE-0-2026-23278)

Vulnerability from cvelistv5 – Published: 2026-03-20 08:08 – Updated: 2026-03-20 08:08
VLAI?
Title
netfilter: nf_tables: always walk all pending catchall elements
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: always walk all pending catchall elements During transaction processing we might have more than one catchall element: 1 live catchall element and 1 pending element that is coming as part of the new batch. If the map holding the catchall elements is also going away, its required to toggle all catchall elements and not just the first viable candidate. Otherwise, we get: WARNING: ./include/net/netfilter/nf_tables.h:1281 at nft_data_release+0xb7/0xe0 [nf_tables], CPU#2: nft/1404 RIP: 0010:nft_data_release+0xb7/0xe0 [nf_tables] [..] __nft_set_elem_destroy+0x106/0x380 [nf_tables] nf_tables_abort_release+0x348/0x8d0 [nf_tables] nf_tables_abort+0xcf2/0x3ac0 [nf_tables] nfnetlink_rcv_batch+0x9c9/0x20e0 [..]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 628bd3e49cba1c066228e23d71a852c23e26da73 , < de47a88c6b807910f05703fb6605f7efdaa11417 (git)
Affected: 628bd3e49cba1c066228e23d71a852c23e26da73 , < 77c26b5056d693ffe5e9f040e946251cdb55ae55 (git)
Affected: 628bd3e49cba1c066228e23d71a852c23e26da73 , < 7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9 (git)
Affected: bc9f791d2593f17e39f87c6e2b3a36549a3705b1 (git)
Affected: 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50 (git)
Affected: a136b7942ad2a50de708f76ea299ccb45ac7a7f9 (git)
Affected: 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8 (git)
Affected: d60be2da67d172aecf866302c91ea11533eca4d9 (git)
Affected: dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41 (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.18.19 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc4 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "net/netfilter/nf_tables_api.c"
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          "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 [..]"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9"
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    "cveId": "CVE-2026-23278",
    "datePublished": "2026-03-20T08:08:58.566Z",
    "dateReserved": "2026-01-13T15:37:45.991Z",
    "dateUpdated": "2026-03-20T08:08:58.566Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23278\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-20T09:16:13.690\",\"lastModified\":\"2026-03-20T13:37:50.737\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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 [..]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nnetfilter: nf_tables: siempre recorrer todos los elementos catchall pendientes\\n\\nDurante el procesamiento de transacciones podr\u00edamos tener m\u00e1s de un elemento catchall:\\n1 elemento catchall activo y 1 elemento pendiente que viene como parte del nuevo lote.\\n\\nSi el mapa que contiene los elementos catchall tambi\u00e9n va a desaparecer, es necesario alternar todos los elementos catchall y no solo el primer candidato viable.\\n\\nDe lo contrario, obtenemos:\\n ADVERTENCIA: ./include/net/netfilter/nf_tables.h:1281 en 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\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/77c26b5056d693ffe5e9f040e946251cdb55ae55\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/de47a88c6b807910f05703fb6605f7efdaa11417\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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