{"api_version":"1","generated_at":"2026-07-23T14:15:32+00:00","cve":"CVE-2026-46188","urls":{"html":"https://cve.report/CVE-2026-46188","api":"https://cve.report/api/cve/CVE-2026-46188.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46188","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46188"},"summary":{"title":"octeon_ep_vf: add NULL check for napi_build_skb()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep_vf: add NULL check for napi_build_skb()\n\nnapi_build_skb() can return NULL on allocation failure. In\n__octep_vf_oq_process_rx(), the result is used directly without a NULL\ncheck in both the single-buffer and multi-fragment paths, leading to a\nNULL pointer dereference.\n\nAdd NULL checks after both napi_build_skb() calls, properly advancing\ndescriptors and consuming remaining fragments on failure.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:34","updated_at":"2026-06-11 03:06:59"},"problem_types":["CWE-476"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3","name":"https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e","name":"https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3","name":"https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572","name":"https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46188","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46188","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 60246cdd4c515ea7d920cddf48932efcb990773e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 b0f4711b426a06fb4c4be85c36b9f5588d5140d3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 6fef6640bbf360e254cc0174365ed30ce3a07572 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 dd66b42854705e4e4ee7f14d260f86c578bed3e3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.88 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.30 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.7 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"46188","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46188","cve":"CVE-2026-46188","epss":"0.000180000","percentile":"0.048040000","score_date":"2026-06-02","updated_at":"2026-06-03 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the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep_vf: add NULL check for napi_build_skb()\n\nnapi_build_skb() can return NULL on allocation failure. In\n__octep_vf_oq_process_rx(), the result is used directly without a NULL\ncheck in both the single-buffer and multi-fragment paths, leading to a\nNULL pointer dereference.\n\nAdd NULL checks after both napi_build_skb() calls, properly advancing\ndescriptors and consuming remaining fragments on failure."}],"providerMetadata":{"dateUpdated":"2026-05-28T09:36:42.251Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e"},{"url":"https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3"},{"url":"https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572"},{"url":"https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3"}],"title":"octeon_ep_vf: add NULL check for napi_build_skb()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46188","datePublished":"2026-05-28T09:36:42.251Z","dateReserved":"2026-05-13T15:03:33.104Z","dateUpdated":"2026-05-28T09:36:42.251Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:34","lastModifiedDate":"2026-06-11 03:06:59","problem_types":["CWE-476"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.88","matchCriteriaId":"4CCB4364-CBF5-40DD-AB08-D4665BBE06FB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.30","matchCriteriaId":"BF39AE08-AE6D-4410-8FBE-76F6BF5BF55B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0.7","matchCriteriaId":"D0893CA7-9AE6-4DFE-AC75-48967D73AD8E"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46188","Ordinal":"1","Title":"octeon_ep_vf: add NULL check for napi_build_skb()","CVE":"CVE-2026-46188","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46188","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep_vf: add NULL check for napi_build_skb()\n\nnapi_build_skb() can return NULL on allocation failure. In\n__octep_vf_oq_process_rx(), the result is used directly without a NULL\ncheck in both the single-buffer and multi-fragment paths, leading to a\nNULL pointer dereference.\n\nAdd NULL checks after both napi_build_skb() calls, properly advancing\ndescriptors and consuming remaining fragments on failure.","Type":"Description","Title":"octeon_ep_vf: add NULL check for napi_build_skb()"}]}}}