{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93083", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T15:57:05.662Z", "datePublished": "2026-09-17T16:11:02.997Z", "dateUpdated": "2026-10-21T12:51:50.003Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:51:50.003Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind TX receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional unidirectional TX\nreceiver channel after successfully acquiring the primary channel. If\nthat second request fails, the function returns immediately and leaves\nthe primary channel allocated.\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": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "lessThan": "d4cf99c7ea95accde58df34bc8636bbebb3066c2", "status": "affected", "versionType": "git"}, {"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "lessThan": "babb017cf5e4600c94c23ea87175a0380235a3ee", "status": "affected", "versionType": "git"}, {"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "lessThan": "717b8e972a667fc1bebe63cbcf0d58e692cbb491", "status": "affected", "versionType": "git"}, {"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "lessThan": "9958f55eace8b43713c9fc54dcf90e7cdefee413", "status": "affected", "versionType": "git"}, {"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "lessThan": "6f7c06744d53dc8e047725d411d7f915d9ec35ae", "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": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "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": "6.4", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d4cf99c7ea95accde58df34bc8636bbebb3066c2"}, {"url": "https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee"}, {"url": "https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491"}, {"url": "https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413"}, {"url": "https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"}], "title": "firmware: arm_scmi: Unwind TX 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": "d4cf99c7ea95accde58df34bc8636bbebb3066c2", "status": "affected", "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "versionType": "git"}, {"lessThan": "babb017cf5e4600c94c23ea87175a0380235a3ee", "status": "affected", "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "versionType": "git"}, {"lessThan": "717b8e972a667fc1bebe63cbcf0d58e692cbb491", "status": "affected", "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "versionType": "git"}, {"lessThan": "9958f55eace8b43713c9fc54dcf90e7cdefee413", "status": "affected", "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "versionType": "git"}, {"lessThan": "6f7c06744d53dc8e047725d411d7f915d9ec35ae", "status": "affected", "version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1", "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": "6.4"}, {"lessThan": "6.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "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 TX receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional unidirectional TX\nreceiver channel after successfully acquiring the primary channel. If\nthat second request fails, the function returns immediately and leaves\nthe primary channel allocated.\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-2026-93083", "lastModified": "2026-10-21T13:20:59.077", "metrics": {}, "published": "2026-09-17T17:18:02.337", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4cf99c7ea95accde58df34bc8636bbebb3066c2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}