{"id":"CVE-2026-93083","title":"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 acqui…","summary":"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 acqui…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < babb017cf5e4600c94c23ea87175a0380235a3ee","Linux >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < 717b8e972a667fc1bebe63cbcf0d58e692cbb491","Linux >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < 9958f55eace8b43713c9fc54dcf90e7cdefee413","Linux >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < 6f7c06744d53dc8e047725d411d7f915d9ec35ae","Linux 6.4"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:18:02.337","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93083","references":[{"url":"https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.761Z","epss":0.00168,"epssPercentile":0.06486,"slug":"CVE-2026-93083","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}