{"api_version":"1","generated_at":"2026-07-23T11:39:44+00:00","cve":"CVE-2026-23178","urls":{"html":"https://cve.report/CVE-2026-23178","api":"https://cve.report/api/cve/CVE-2026-23178.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23178","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23178"},"summary":{"title":"HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()\n\n`i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data\ninto `ihid->rawbuf`.\n\nThe former can come from the userspace in the hidraw driver and is only\nbounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set\n`max_buffer_size` field of `struct hid_ll_driver` which we do not).\n\nThe latter has size determined at runtime by the maximum size of\ndifferent report types you could receive on any particular device and\ncan be a much smaller value.\n\nFix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`.\n\nThe impact is low since access to hidraw devices requires root.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-02-14 17:15:55","updated_at":"2026-04-03 14:16:25"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29","name":"https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76","name":"https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9","name":"https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e","name":"https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219","name":"https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23178","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23178","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 f9c9ad89d845f88a1509e9d672f65d234425fde9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 cff3f619fd1cb40cdd89971df9001f075613d219 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 786ec171788bdf9dda38789163f1b1fbb47f2d1e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 2124279f1f8c32c1646ce98e75a1a39b23b7db76 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nHID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()\n\n`i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data\ninto `ihid->rawbuf`.\n\nThe former can come from the userspace in the hidraw driver and is only\nbounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set\n`max_buffer_size` field of `struct hid_ll_driver` which we do not).\n\nThe latter has size determined at runtime by the maximum size of\ndifferent report types you could receive on any particular device and\ncan be a much smaller value.\n\nFix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`.\n\nThe impact is low since access to hidraw devices requires root."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-04-03T13:32:18.417Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9"},{"url":"https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219"},{"url":"https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e"},{"url":"https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76"},{"url":"https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29"}],"title":"HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23178","datePublished":"2026-02-14T16:27:10.108Z","dateReserved":"2026-01-13T15:37:45.984Z","dateUpdated":"2026-04-03T13:32:18.417Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-02-14 17:15:55","lastModifiedDate":"2026-04-03 14:16:25","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23178","Ordinal":"1","Title":"HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_repor","CVE":"CVE-2026-23178","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23178","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()\n\n`i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data\ninto `ihid->rawbuf`.\n\nThe former can come from the userspace in the hidraw driver and is only\nbounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set\n`max_buffer_size` field of `struct hid_ll_driver` which we do not).\n\nThe latter has size determined at runtime by the maximum size of\ndifferent report types you could receive on any particular device and\ncan be a much smaller value.\n\nFix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`.\n\nThe impact is low since access to hidraw devices requires root.","Type":"Description","Title":"HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_repor"}]}}}