{"api_version":"1","generated_at":"2026-05-10T20:36:34+00:00","cve":"CVE-2026-43281","urls":{"html":"https://cve.report/CVE-2026-43281","api":"https://cve.report/api/cve/CVE-2026-43281.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43281","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43281"},"summary":{"title":"mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()\n\nAlthough it is guided that `#mbox-cells` must be at least 1, there are\nmany instances of `#mbox-cells = <0>;` in the device tree. If that is\nthe case and the corresponding mailbox controller does not provide\n`fw_xlate` and of_xlate` function pointers, `fw_mbox_index_xlate()` will\nbe used by default and out-of-bounds accesses could occur due to lack of\nbounds check in that function.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 12:16:49","updated_at":"2026-05-08 19:13:43"},"problem_types":["CWE-125"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d","name":"https://git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb","name":"https://git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310","name":"https://git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f","name":"https://git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab","name":"https://git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265","name":"https://git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43281","name":"CVE 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the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()\n\nAlthough it is guided that `#mbox-cells` must be at least 1, there are\nmany instances of `#mbox-cells = <0>;` in the device tree. If that is\nthe case and the corresponding mailbox controller does not provide\n`fw_xlate` and of_xlate` function pointers, `fw_mbox_index_xlate()` will\nbe used by default and out-of-bounds accesses could occur due to lack of\nbounds check in that function."}],"providerMetadata":{"dateUpdated":"2026-05-07T17:15:22.833Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f"},{"url":"https://git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265"},{"url":"https://git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d"},{"url":"https://git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb"},{"url":"https://git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab"},{"url":"https://git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310"}],"title":"mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43281","datePublished":"2026-05-06T11:29:02.278Z","dateReserved":"2026-05-01T14:12:55.998Z","dateUpdated":"2026-05-07T17:15:22.833Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 12:16:49","lastModifiedDate":"2026-05-08 19:13:43","problem_types":["CWE-125"],"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:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18.1","versionEndExcluding":"6.1.167","matchCriteriaId":"DF38EC6B-E140-4F00-8705-4F8DFC83958D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.130","matchCriteriaId":"C57BB918-DF28-46B3-94F7-144176841267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.77","matchCriteriaId":"B3D12E00-E42D-4056-B354-BAD4903C03A5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.16","matchCriteriaId":"B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.6","matchCriteriaId":"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:-:*:*:*:*:*:*","matchCriteriaId":"2C941823-DB24-432E-8F78-90665662756A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:rc2:*:*:*:*:*:*","matchCriteriaId":"E909F0A0-2398-4420-AA63-605C42F5CADF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:rc3:*:*:*:*:*:*","matchCriteriaId":"77E4C479-2D2C-4009-8D71-18AF50454D7B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:rc4:*:*:*:*:*:*","matchCriteriaId":"C5AE67DB-5E94-4439-98E9-761ACCC48A4A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:rc5:*:*:*:*:*:*","matchCriteriaId":"777DE673-1457-420F-AAAF-9B1E3AC79328"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:rc6:*:*:*:*:*:*","matchCriteriaId":"222D33AD-EC2D-4813-83C2-B904534BFCFE"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:3.18:rc7:*:*:*:*:*:*","matchCriteriaId":"A5F9AEA5-34CE-4ED3-9821-6C7435CE3320"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43281","Ordinal":"1","Title":"mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()","CVE":"CVE-2026-43281","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43281","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()\n\nAlthough it is guided that `#mbox-cells` must be at least 1, there are\nmany instances of `#mbox-cells = <0>;` in the device tree. If that is\nthe case and the corresponding mailbox controller does not provide\n`fw_xlate` and of_xlate` function pointers, `fw_mbox_index_xlate()` will\nbe used by default and out-of-bounds accesses could occur due to lack of\nbounds check in that function.","Type":"Description","Title":"mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()"}]}}}