{"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": "2026-05-08T14:22:18.087Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-08T14:22:18.087Z"}, "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-43453", "lastModified": "2026-05-08T15:16:58.027", "metrics": {}, "published": "2026-05-08T15:16:58.027", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0a55d62cdb628923d8a21724374a70c76ac7d19d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1957e793196e7f8557374fd4eda53abcbb42e1c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/324b749aa5b2d516ccfab933df9d3f56e7807f5f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57fb87ca095d5127cd7a27583b8ec43dcf7c9e9e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60c1d18781e37bfb96290b86510eb01c5fa24d75"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6d8cd2db236a9dd13dbc2d05843b3445cc964b5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dfbdac719198778b581bc0dd055df2542edb8c62"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e047f6fbb975f685d6c9fcef95b3b7787a79b46d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,1957e793196e7f8557374fd4eda53abcbb42e1c0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,57fb87ca095d5127cd7a27583b8ec43dcf7c9e9e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,60c1d18781e37bfb96290b86510eb01c5fa24d75)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,0a55d62cdb628923d8a21724374a70c76ac7d19d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,dfbdac719198778b581bc0dd055df2542edb8c62)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,e047f6fbb975f685d6c9fcef95b3b7787a79b46d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,324b749aa5b2d516ccfab933df9d3f56e7807f5f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3c4287f62044a90e73a561aa05fc46e62da173da,d6d8cd2db236a9dd13dbc2d05843b3445cc964b5)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.19,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.9,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-08T17:00:16.207427+00:00", "updated": "2026-05-08T21:15:05.093884+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119", "CWE-200"]}