{"api_version":"1","generated_at":"2026-09-17T23:17:23+00:00","cve":"CVE-2026-90063","urls":{"html":"https://cve.report/CVE-2026-90063","api":"https://cve.report/api/cve/CVE-2026-90063.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90063","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90063"},"summary":{"title":"virtio-net: Ensure that TCP packets don't overflow gso_segs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: Ensure that TCP packets don't overflow gso_segs\n\nThe user can specify any gso_size in a packet crafted with an AF_PACKET\nPACKET_VNET_HDR socket, even smaller than TCP_MIN_GSO_SIZE = 8. At the\nsame time, GSO_MAX_SIZE = 8 * GSO_MAX_SEGS = 8 * 65535. When the user\ncrafts a packet with gso_size < 8, there is a risk for partial GSO to\noverflow the 16-bit gso_segs field when dividing the SKB length by\ngso_size.\n\nAdjust gso_size of TCP packets to be at least TCP_MIN_GSO_SIZE = 8. Keep\ngso_size of UDP GSO packets, as gso_size=1 is valid and explicitly\ntested at tools/testing/selftests/net/tun.c:649.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:16:55","updated_at":"2026-09-17 17:16:55"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/29bd12c7c5f9d6cf855b87bace18f71e9607f9e8","name":"https://git.kernel.org/stable/c/29bd12c7c5f9d6cf855b87bace18f71e9607f9e8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8f6667a081887c2b59c6f3dd86c1789ada563762","name":"https://git.kernel.org/stable/c/8f6667a081887c2b59c6f3dd86c1789ada563762","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0e5ed3b98d1d8d251acfdccfeaa607453ad12954","name":"https://git.kernel.org/stable/c/0e5ed3b98d1d8d251acfdccfeaa607453ad12954","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c27c449d455aafd9018a3cbab150f1c42c87923f","name":"https://git.kernel.org/stable/c/c27c449d455aafd9018a3cbab150f1c42c87923f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/339f47ae04dcc6b5a730dd6bc70dddc8937c3260","name":"https://git.kernel.org/stable/c/339f47ae04dcc6b5a730dd6bc70dddc8937c3260","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/75c271c48f483af678e514734e10b2452410e08c","name":"https://git.kernel.org/stable/c/75c271c48f483af678e514734e10b2452410e08c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d3d111fe809773edbb4ae121e36253b7d683509a","name":"https://git.kernel.org/stable/c/d3d111fe809773edbb4ae121e36253b7d683509a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90063","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90063","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 d3d111fe809773edbb4ae121e36253b7d683509a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 8f6667a081887c2b59c6f3dd86c1789ada563762 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 339f47ae04dcc6b5a730dd6bc70dddc8937c3260 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 29bd12c7c5f9d6cf855b87bace18f71e9607f9e8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 0e5ed3b98d1d8d251acfdccfeaa607453ad12954 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 75c271c48f483af678e514734e10b2452410e08c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c6d2ecbda83150b2036a2b36b21381ad4667762 c27c449d455aafd9018a3cbab150f1c42c87923f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bfbaf151efe491e30697e21c8b7ae1b615480873 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6c83456601e65a6dd371ddf595510183d198e9b1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b3ebd9830c6026c98f03f7047c9d608573773f13 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b96fb681ca789629b8ba3da99ca3b2e6fa807f0a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14.187 4.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.19.131 4.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.4.46 5.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.6.18 5.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/linux/virtio_net.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d3d111fe809773edbb4ae121e36253b7d683509a","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"lessThan":"8f6667a081887c2b59c6f3dd86c1789ada563762","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"lessThan":"339f47ae04dcc6b5a730dd6bc70dddc8937c3260","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"lessThan":"29bd12c7c5f9d6cf855b87bace18f71e9607f9e8","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"lessThan":"0e5ed3b98d1d8d251acfdccfeaa607453ad12954","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"lessThan":"75c271c48f483af678e514734e10b2452410e08c","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"lessThan":"c27c449d455aafd9018a3cbab150f1c42c87923f","status":"affected","version":"7c6d2ecbda83150b2036a2b36b21381ad4667762","versionType":"git"},{"status":"affected","version":"bfbaf151efe491e30697e21c8b7ae1b615480873","versionType":"git"},{"status":"affected","version":"6c83456601e65a6dd371ddf595510183d198e9b1","versionType":"git"},{"status":"affected","version":"b3ebd9830c6026c98f03f7047c9d608573773f13","versionType":"git"},{"status":"affected","version":"b96fb681ca789629b8ba3da99ca3b2e6fa807f0a","versionType":"git"},{"lessThan":"4.15","status":"affected","version":"4.14.187","versionType":"semver"},{"lessThan":"4.20","status":"affected","version":"4.19.131","versionType":"semver"},{"lessThan":"5.5","status":"affected","version":"5.4.46","versionType":"semver"},{"lessThan":"5.7","status":"affected","version":"5.6.18","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/virtio_net.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.187","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.131","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.46","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: Ensure that TCP packets don't overflow gso_segs\n\nThe user can specify any gso_size in a packet crafted with an AF_PACKET\nPACKET_VNET_HDR socket, even smaller than TCP_MIN_GSO_SIZE = 8. At the\nsame time, GSO_MAX_SIZE = 8 * GSO_MAX_SEGS = 8 * 65535. When the user\ncrafts a packet with gso_size < 8, there is a risk for partial GSO to\noverflow the 16-bit gso_segs field when dividing the SKB length by\ngso_size.\n\nAdjust gso_size of TCP packets to be at least TCP_MIN_GSO_SIZE = 8. Keep\ngso_size of UDP GSO packets, as gso_size=1 is valid and explicitly\ntested at tools/testing/selftests/net/tun.c:649."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:05:46.968Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d3d111fe809773edbb4ae121e36253b7d683509a"},{"url":"https://git.kernel.org/stable/c/8f6667a081887c2b59c6f3dd86c1789ada563762"},{"url":"https://git.kernel.org/stable/c/339f47ae04dcc6b5a730dd6bc70dddc8937c3260"},{"url":"https://git.kernel.org/stable/c/29bd12c7c5f9d6cf855b87bace18f71e9607f9e8"},{"url":"https://git.kernel.org/stable/c/0e5ed3b98d1d8d251acfdccfeaa607453ad12954"},{"url":"https://git.kernel.org/stable/c/75c271c48f483af678e514734e10b2452410e08c"},{"url":"https://git.kernel.org/stable/c/c27c449d455aafd9018a3cbab150f1c42c87923f"}],"title":"virtio-net: Ensure that TCP packets don't overflow gso_segs","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90063","datePublished":"2026-09-17T16:05:46.968Z","dateReserved":"2026-09-11T19:38:34.784Z","dateUpdated":"2026-09-17T16:05:46.968Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:16:55","lastModifiedDate":"2026-09-17 17:16:55","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90063","Ordinal":"1","Title":"virtio-net: Ensure that TCP packets don't overflow gso_segs","CVE":"CVE-2026-90063","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90063","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: Ensure that TCP packets don't overflow gso_segs\n\nThe user can specify any gso_size in a packet crafted with an AF_PACKET\nPACKET_VNET_HDR socket, even smaller than TCP_MIN_GSO_SIZE = 8. At the\nsame time, GSO_MAX_SIZE = 8 * GSO_MAX_SEGS = 8 * 65535. When the user\ncrafts a packet with gso_size < 8, there is a risk for partial GSO to\noverflow the 16-bit gso_segs field when dividing the SKB length by\ngso_size.\n\nAdjust gso_size of TCP packets to be at least TCP_MIN_GSO_SIZE = 8. Keep\ngso_size of UDP GSO packets, as gso_size=1 is valid and explicitly\ntested at tools/testing/selftests/net/tun.c:649.","Type":"Description","Title":"virtio-net: Ensure that TCP packets don't overflow gso_segs"}]}}}