CVE-2026-93082

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93082", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T15:57:05.662Z", "datePublished": "2026-09-17T16:11:02.339Z", "dateUpdated": "2026-10-19T09:05:17.992Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:05:17.992Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/firmware/arm_scmi/transports/mailbox.c"], "versions": [{"version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "4c2a5d72357e5c6743c23b59615da287140d9d31", "status": "affected", "versionType": "git"}, {"version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "3b0b02134ab90202af80b102fa37196b9689e86f", "status": "affected", "versionType": "git"}, {"version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "3515aed7fe424b79c49ff9cd51f7802a64a4ab7b", "status": "affected", "versionType": "git"}, {"version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/firmware/arm_scmi/transports/mailbox.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-93082", "lastModified": "2026-10-19T10:16:58.167", "metrics": {}, "published": "2026-09-17T17:18:02.193", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa8b28ba22d95be4d2dd3c37fbdbdc066af82941,4c2a5d72357e5c6743c23b59615da287140d9d31)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa8b28ba22d95be4d2dd3c37fbdbdc066af82941,3b0b02134ab90202af80b102fa37196b9689e86f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa8b28ba22d95be4d2dd3c37fbdbdc066af82941,3515aed7fe424b79c49ff9cd51f7802a64a4ab7b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa8b28ba22d95be4d2dd3c37fbdbdc066af82941,f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T07:30:17.073825+00:00", "updated": "2026-09-19T14:15:17.200016+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-664"]}