{"cve":"CVE-2026-93083","nvd":{"published":"2026-09-17T17:18:02.337","modified":"2026-10-21T13:20:59.077","status":"Received","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae","https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491","https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413","https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee","https://git.kernel.org/stable/c/d4cf99c7ea95accde58df34bc8636bbebb3066c2"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-93083","score":0.00209,"percentile":0.10945,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}