{"id":"CVE-2026-93083","revision":"339e006f550f4aa28bd13f9de637f150","records":[{"revision":"339e006f550f4aa28bd13f9de637f150","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93083","aliases":[],"title":"firmware: arm_scmi: Unwind TX receiver mailbox setup failure","description":"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.","state":0,"publishedAt":"2026-09-17T16:11:02.997+00:00","modifiedAt":"2026-10-21T12:51:50.003+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/firmware/arm_scmi/transports/mailbox.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1\",\n                            \"lessThan\": \"d4cf99c7ea95accde58df34bc8636bbebb3066c2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1\",\n                            \"lessThan\": \"babb017cf5e4600c94c23ea87175a0380235a3ee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1\",\n                            \"lessThan\": \"717b8e972a667fc1bebe63cbcf0d58e692cbb491\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1\",\n                            \"lessThan\": \"9958f55eace8b43713c9fc54dcf90e7cdefee413\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1\",\n                            \"lessThan\": \"6f7c06744d53dc8e047725d411d7f915d9ec35ae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/firmware/arm_scmi/transports/mailbox.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d4cf99c7ea95accde58df34bc8636bbebb3066c2","https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee","https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491","https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413","https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93083","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93083","identifiers":["CVE-2026-93083"]},"retained":false,"historicalAffected":[]}],"coverage":[]}