{"api_version":"1","generated_at":"2026-10-07T02:35:34+00:00","cve":"CVE-2026-98288","urls":{"html":"https://cve.report/CVE-2026-98288","api":"https://cve.report/api/cve/CVE-2026-98288.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98288","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98288"},"summary":{"title":"net: stmmac: fix TSO header length truncation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: fix TSO header length truncation\n\nstmmac_tso_xmit() stores the protocol header length returned by\nstmmac_tso_header_size() in a u8. stmmac_tso_valid_packet() admits\nheaders up to 1023 bytes, so a header longer than 255 bytes wraps modulo\n256 (486 becomes 230, 256 becomes 0).\n\nA TCP over IPv6 socket carrying a few hundred bytes of sticky\ndestination/hop-by-hop options makes skb_tcp_all_headers() exceed 255\nwhile staying below the 1023-byte limit, so such an skb reaches\nstmmac_tso_xmit().\n\nWiden proto_hdr_len to unsigned int, which is sufficient since the value\nis bounded by the hardware limit, and adjust the debug print specifier\naccordingly.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:19","updated_at":"2026-10-06 09:18:19"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bcf6013c2b4d732c6e4bf4d0f6ae4a18d63d414b","name":"https://git.kernel.org/stable/c/bcf6013c2b4d732c6e4bf4d0f6ae4a18d63d414b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/15989abd74f16f44bf953d056b95f1d2fda9b0cd","name":"https://git.kernel.org/stable/c/15989abd74f16f44bf953d056b95f1d2fda9b0cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98288","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98288","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9edfa7dab8112a012b349b7937f5444fdc21e8f9 bcf6013c2b4d732c6e4bf4d0f6ae4a18d63d414b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9edfa7dab8112a012b349b7937f5444fdc21e8f9 15989abd74f16f44bf953d056b95f1d2fda9b0cd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98288","cve":"CVE-2026-98288","epss":"0.001620000","percentile":"0.048430000","score_date":"2026-10-06","updated_at":"2026-10-07 00:14:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bcf6013c2b4d732c6e4bf4d0f6ae4a18d63d414b","status":"affected","version":"9edfa7dab8112a012b349b7937f5444fdc21e8f9","versionType":"git"},{"lessThan":"15989abd74f16f44bf953d056b95f1d2fda9b0cd","status":"affected","version":"9edfa7dab8112a012b349b7937f5444fdc21e8f9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.13"},{"lessThan":"4.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"4.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"4.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: fix TSO header length truncation\n\nstmmac_tso_xmit() stores the protocol header length returned by\nstmmac_tso_header_size() in a u8. stmmac_tso_valid_packet() admits\nheaders up to 1023 bytes, so a header longer than 255 bytes wraps modulo\n256 (486 becomes 230, 256 becomes 0).\n\nA TCP over IPv6 socket carrying a few hundred bytes of sticky\ndestination/hop-by-hop options makes skb_tcp_all_headers() exceed 255\nwhile staying below the 1023-byte limit, so such an skb reaches\nstmmac_tso_xmit().\n\nWiden proto_hdr_len to unsigned int, which is sufficient since the value\nis bounded by the hardware limit, and adjust the debug print specifier\naccordingly."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:45:48.856Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bcf6013c2b4d732c6e4bf4d0f6ae4a18d63d414b"},{"url":"https://git.kernel.org/stable/c/15989abd74f16f44bf953d056b95f1d2fda9b0cd"}],"title":"net: stmmac: fix TSO header length truncation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98288","datePublished":"2026-10-06T08:45:48.856Z","dateReserved":"2026-09-25T10:25:14.336Z","dateUpdated":"2026-10-06T08:45:48.856Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:19","lastModifiedDate":"2026-10-06 09:18:19","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98288","Ordinal":"1","Title":"net: stmmac: fix TSO header length truncation","CVE":"CVE-2026-98288","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98288","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: fix TSO header length truncation\n\nstmmac_tso_xmit() stores the protocol header length returned by\nstmmac_tso_header_size() in a u8. stmmac_tso_valid_packet() admits\nheaders up to 1023 bytes, so a header longer than 255 bytes wraps modulo\n256 (486 becomes 230, 256 becomes 0).\n\nA TCP over IPv6 socket carrying a few hundred bytes of sticky\ndestination/hop-by-hop options makes skb_tcp_all_headers() exceed 255\nwhile staying below the 1023-byte limit, so such an skb reaches\nstmmac_tso_xmit().\n\nWiden proto_hdr_len to unsigned int, which is sufficient since the value\nis bounded by the hardware limit, and adjust the debug print specifier\naccordingly.","Type":"Description","Title":"net: stmmac: fix TSO header length truncation"}]}}}