{"api_version":"1","generated_at":"2026-10-03T01:57:51+00:00","cve":"CVE-2026-93082","urls":{"html":"https://cve.report/CVE-2026-93082","api":"https://cve.report/api/cve/CVE-2026-93082.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93082","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93082"},"summary":{"title":"firmware: arm_scmi: Unwind P2A receiver mailbox setup failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind P2A receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional P2A receiver channel after\nsuccessfully acquiring the primary P2A channel. If that later request\nfails, the function returns immediately and leaves the primary channel\nallocated.\n\nUnwind the primary mailbox channel before returning the error so probe\ndeferral or other setup failures do not leave the channel busy for later\nprobe attempts.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:02","updated_at":"2026-09-17 17:18:02"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f","name":"https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b","name":"https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31","name":"https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d","name":"https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93082","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93082","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 4c2a5d72357e5c6743c23b59615da287140d9d31 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 3b0b02134ab90202af80b102fa37196b9689e86f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 3515aed7fe424b79c49ff9cd51f7802a64a4ab7b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa8b28ba22d95be4d2dd3c37fbdbdc066af82941 f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.11 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":{"cve_year":"2026","cve_id":"93082","cve":"CVE-2026-93082","epss":"0.002000000","percentile":"0.101470000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/firmware/arm_scmi/transports/mailbox.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4c2a5d72357e5c6743c23b59615da287140d9d31","status":"affected","version":"fa8b28ba22d95be4d2dd3c37fbdbdc066af82941","versionType":"git"},{"lessThan":"3b0b02134ab90202af80b102fa37196b9689e86f","status":"affected","version":"fa8b28ba22d95be4d2dd3c37fbdbdc066af82941","versionType":"git"},{"lessThan":"3515aed7fe424b79c49ff9cd51f7802a64a4ab7b","status":"affected","version":"fa8b28ba22d95be4d2dd3c37fbdbdc066af82941","versionType":"git"},{"lessThan":"f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d","status":"affected","version":"fa8b28ba22d95be4d2dd3c37fbdbdc066af82941","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/firmware/arm_scmi/transports/mailbox.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","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":"6.12.110","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind P2A receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional P2A receiver channel after\nsuccessfully acquiring the primary P2A channel. If that later request\nfails, the function returns immediately and leaves the primary channel\nallocated.\n\nUnwind the primary mailbox channel before returning the error so probe\ndeferral or other setup failures do not leave the channel busy for later\nprobe attempts."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:02.339Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31"},{"url":"https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f"},{"url":"https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b"},{"url":"https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d"}],"title":"firmware: arm_scmi: Unwind P2A receiver mailbox setup failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93082","datePublished":"2026-09-17T16:11:02.339Z","dateReserved":"2026-09-17T15:57:05.662Z","dateUpdated":"2026-09-17T16:11:02.339Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:02","lastModifiedDate":"2026-09-17 17:18:02","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93082","Ordinal":"1","Title":"firmware: arm_scmi: Unwind P2A receiver mailbox setup failure","CVE":"CVE-2026-93082","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93082","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind P2A receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional P2A receiver channel after\nsuccessfully acquiring the primary P2A channel. If that later request\nfails, the function returns immediately and leaves the primary channel\nallocated.\n\nUnwind the primary mailbox channel before returning the error so probe\ndeferral or other setup failures do not leave the channel busy for later\nprobe attempts.","Type":"Description","Title":"firmware: arm_scmi: Unwind P2A receiver mailbox setup failure"}]}}}