{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43341", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.003Z", "datePublished": "2026-05-08T13:37:19.256Z", "dateUpdated": "2026-05-08T13:37:19.256Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-08T13:37:19.256Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ipv6: ioam6: prevent schema length wraparound in trace fill\n\nioam6_fill_trace_data() stores the schema contribution to the trace\nlength in a u8. With bit 22 enabled and the largest schema payload,\nsclen becomes 1 + 1020 / 4, wraps from 256 to 0, and bypasses the\nremaining-space check. __ioam6_fill_trace_data() then positions the\nwrite cursor without reserving the schema area but still copies the\n4-byte schema header and the full schema payload, overrunning the trace\nbuffer.\n\nKeep sclen in an unsigned int so the remaining-space check and the write\ncursor calculation both see the full schema length."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/ioam6.c"], "versions": [{"version": "8c6f6fa6772696be0c047a711858084b38763728", "lessThan": "e96d48b37708d53cbdc47f6f60b0714fc4a5f596", "status": "affected", "versionType": "git"}, {"version": "8c6f6fa6772696be0c047a711858084b38763728", "lessThan": "d1b041080086e91d3733a5438a8c51ad5d3d8e09", "status": "affected", "versionType": "git"}, {"version": "8c6f6fa6772696be0c047a711858084b38763728", "lessThan": "77695a69baca9b99d95fad09fc78c2318736604f", "status": "affected", "versionType": "git"}, {"version": "8c6f6fa6772696be0c047a711858084b38763728", "lessThan": "184d2e9db27c0f76226b5cad16fe29510a5d2280", "status": "affected", "versionType": "git"}, {"version": "8c6f6fa6772696be0c047a711858084b38763728", "lessThan": "d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d", "status": "affected", "versionType": "git"}, {"version": "8c6f6fa6772696be0c047a711858084b38763728", "lessThan": "5e67ba9bb531e1ec6599a82a065dea9040b9ce50", "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/ipv6/ioam6.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.168", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.134", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "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": "5.15", "versionEndExcluding": "6.1.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.134"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e96d48b37708d53cbdc47f6f60b0714fc4a5f596"}, {"url": "https://git.kernel.org/stable/c/d1b041080086e91d3733a5438a8c51ad5d3d8e09"}, {"url": "https://git.kernel.org/stable/c/77695a69baca9b99d95fad09fc78c2318736604f"}, {"url": "https://git.kernel.org/stable/c/184d2e9db27c0f76226b5cad16fe29510a5d2280"}, {"url": "https://git.kernel.org/stable/c/d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d"}, {"url": "https://git.kernel.org/stable/c/5e67ba9bb531e1ec6599a82a065dea9040b9ce50"}], "title": "net/ipv6: ioam6: prevent schema length wraparound in trace fill", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ipv6: ioam6: prevent schema length wraparound in trace fill\n\nioam6_fill_trace_data() stores the schema contribution to the trace\nlength in a u8. With bit 22 enabled and the largest schema payload,\nsclen becomes 1 + 1020 / 4, wraps from 256 to 0, and bypasses the\nremaining-space check. __ioam6_fill_trace_data() then positions the\nwrite cursor without reserving the schema area but still copies the\n4-byte schema header and the full schema payload, overrunning the trace\nbuffer.\n\nKeep sclen in an unsigned int so the remaining-space check and the write\ncursor calculation both see the full schema length."}], "id": "CVE-2026-43341", "lastModified": "2026-05-08T14:16:44.050", "metrics": {}, "published": "2026-05-08T14:16:44.050", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/184d2e9db27c0f76226b5cad16fe29510a5d2280"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e67ba9bb531e1ec6599a82a065dea9040b9ce50"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77695a69baca9b99d95fad09fc78c2318736604f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1b041080086e91d3733a5438a8c51ad5d3d8e09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e96d48b37708d53cbdc47f6f60b0714fc4a5f596"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8c6f6fa6772696be0c047a711858084b38763728,e96d48b37708d53cbdc47f6f60b0714fc4a5f596)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8c6f6fa6772696be0c047a711858084b38763728,d1b041080086e91d3733a5438a8c51ad5d3d8e09)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8c6f6fa6772696be0c047a711858084b38763728,77695a69baca9b99d95fad09fc78c2318736604f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8c6f6fa6772696be0c047a711858084b38763728,184d2e9db27c0f76226b5cad16fe29510a5d2280)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8c6f6fa6772696be0c047a711858084b38763728,d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8c6f6fa6772696be0c047a711858084b38763728,5e67ba9bb531e1ec6599a82a065dea9040b9ce50)"}}], "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": "5.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.168,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.134,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.81,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.22,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.19.12,6.19.*]"}}, {"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": "2026-05-08T19:30:05.520343+00:00", "updated": "2026-05-08T21:30:05.354623+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119", "CWE-120"]}