{"id":"CVE-2026-93086","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Avoid IDR updates while cleaning channels\n\nscmi_cleanup_channels() walks the TX/RX channel IDRs with\nidr_for_each() to free transport resources and …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Avoid IDR updates while cleaning channels\n\nscmi_cleanup_channels() walks the TX/RX channel IDRs with\nidr_for_each() to free transport resources and …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 < aed24a3c63920539e9de7fbfe7929a2e7c888cd2","Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 < 431c6b872ba7fedcc5a3afb0ec3517db4d95d088","Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 < 54e5a4f7d83db4552d963d0785be32d9df680dcd","Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 < bab26acebe55e8ad3ab545abda72faa7ca28c477","Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 < c38b1e19485aaa820e52cfe162525a8af67563da","Linux 6.3"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:18:02.713","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93086","references":[{"url":"https://git.kernel.org/stable/c/431c6b872ba7fedcc5a3afb0ec3517db4d95d088","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/54e5a4f7d83db4552d963d0785be32d9df680dcd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aed24a3c63920539e9de7fbfe7929a2e7c888cd2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bab26acebe55e8ad3ab545abda72faa7ca28c477","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c38b1e19485aaa820e52cfe162525a8af67563da","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.760Z","epss":0.002,"epssPercentile":0.10109,"slug":"CVE-2026-93086","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Avoid IDR updates while cleaning channels\n\nscmi_cleanup_channels() walks the TX/RX channel IDRs with\nidr_for_each() to free transport resources and destroy the dedicated\ntransport devices before calling idr_destroy().\n\nThe destroy callback removed each entry from the same IDR being walked.\nThat is not needed for this cleanup path, and it is unsafe because\nidr_for_each() has not advanced its radix-tree iterator while the\ncallback is running. Removing the current entry from the callback can\ninvalidate the iterator state. The callback also cannot be protected by\nrcu_read_lock(), because scmi_device_destroy() may sleep.\n\nLeave IDR teardown to the following idr_destroy() call and keep the\ncallback limited to device destruction.\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":[]}