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vuln-cve/data/2026/43xxx/CVE-2026-43453.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-43453",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-05-01T14:12:56.010Z",
"datePublished": "2026-05-08T14:22:18.087Z",
"dateUpdated": "2026-11-06T15:42:55.723Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T22:24:52.944Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo: fix stack out-of-bounds read in pipapo_drop()\n\npipapo_drop() passes rulemap[i + 1].n to pipapo_unmap() as the\nto_offset argument on every iteration, including the last one where\ni == m->field_count - 1. This reads one element past the end of the\nstack-allocated rulemap array (declared as rulemap[NFT_PIPAPO_MAX_FIELDS]\nwith NFT_PIPAPO_MAX_FIELDS == 16).\n\nAlthough pipapo_unmap() returns early when is_last is true without\nusing the to_offset value, the argument is evaluated at the call site\nbefore the function body executes, making this a genuine out-of-bounds\nstack read confirmed by KASAN:\n\n BUG: KASAN: stack-out-of-bounds in pipapo_drop+0x50c/0x57c [nf_tables]\n Read of size 4 at addr ffff8000810e71a4\n\n This frame has 1 object:\n [32, 160) 'rulemap'\n\n The buggy address is at offset 164 -- exactly 4 bytes past the end\n of the rulemap array.\n\nPass 0 instead of rulemap[i + 1].n on the last iteration to avoid\nthe out-of-bounds read."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/netfilter/nft_set_pipapo.c"
],
"versions": [
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "1957e793196e7f8557374fd4eda53abcbb42e1c0",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "57fb87ca095d5127cd7a27583b8ec43dcf7c9e9e",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "60c1d18781e37bfb96290b86510eb01c5fa24d75",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "0a55d62cdb628923d8a21724374a70c76ac7d19d",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "dfbdac719198778b581bc0dd055df2542edb8c62",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "e047f6fbb975f685d6c9fcef95b3b7787a79b46d",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "324b749aa5b2d516ccfab933df9d3f56e7807f5f",
"status": "affected",
"versionType": "git"
},
{
"version": "3c4287f62044a90e73a561aa05fc46e62da173da",
"lessThan": "d6d8cd2db236a9dd13dbc2d05843b3445cc964b5",
"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/nft_set_pipapo.c"
],
"versions": [
{
"version": "5.6",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.6",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.253",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.203",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.167",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.130",
"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": "5.6",
"versionEndExcluding": "5.10.253"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "5.15.203"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.1.167"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.6.130"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.12.78"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.18.19"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.19.9"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "7.0"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/1957e793196e7f8557374fd4eda53abcbb42e1c0"
},
{
"url": "https://git.kernel.org/stable/c/57fb87ca095d5127cd7a27583b8ec43dcf7c9e9e"
},
{
"url": "https://git.kernel.org/stable/c/60c1d18781e37bfb96290b86510eb01c5fa24d75"
},
{
"url": "https://git.kernel.org/stable/c/0a55d62cdb628923d8a21724374a70c76ac7d19d"
},
{
"url": "https://git.kernel.org/stable/c/dfbdac719198778b581bc0dd055df2542edb8c62"
},
{
"url": "https://git.kernel.org/stable/c/e047f6fbb975f685d6c9fcef95b3b7787a79b46d"
},
{
"url": "https://git.kernel.org/stable/c/324b749aa5b2d516ccfab933df9d3f56e7807f5f"
},
{
"url": "https://git.kernel.org/stable/c/d6d8cd2db236a9dd13dbc2d05843b3445cc964b5"
}
],
"title": "netfilter: nft_set_pipapo: fix stack out-of-bounds read in pipapo_drop()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-43453",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T15:39:22.846644Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T15:42:55.723Z"
}
}
]
}
}