CVE-2026-93086

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93086", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T15:57:05.662Z", "datePublished": "2026-09-17T16:11:05.025Z", "dateUpdated": "2026-10-30T12:35:52.863Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:35:52.863Z"}, "descriptions": [{"lang": "en", "value": "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 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."}], "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/driver.c"], "versions": [{"version": "22f7f35fd71b597a5d916e41d7646be6ee530c86", "lessThan": "f50698c617350a6e2064dffd6cff3f391e142f55", "status": "affected", "versionType": "git"}, {"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "lessThan": "aed24a3c63920539e9de7fbfe7929a2e7c888cd2", "status": "affected", "versionType": "git"}, {"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "lessThan": "431c6b872ba7fedcc5a3afb0ec3517db4d95d088", "status": "affected", "versionType": "git"}, {"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "lessThan": "54e5a4f7d83db4552d963d0785be32d9df680dcd", "status": "affected", "versionType": "git"}, {"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "lessThan": "bab26acebe55e8ad3ab545abda72faa7ca28c477", "status": "affected", "versionType": "git"}, {"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "lessThan": "c38b1e19485aaa820e52cfe162525a8af67563da", "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/driver.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "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": "6.3", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f50698c617350a6e2064dffd6cff3f391e142f55"}, {"url": "https://git.kernel.org/stable/c/aed24a3c63920539e9de7fbfe7929a2e7c888cd2"}, {"url": "https://git.kernel.org/stable/c/431c6b872ba7fedcc5a3afb0ec3517db4d95d088"}, {"url": "https://git.kernel.org/stable/c/54e5a4f7d83db4552d963d0785be32d9df680dcd"}, {"url": "https://git.kernel.org/stable/c/bab26acebe55e8ad3ab545abda72faa7ca28c477"}, {"url": "https://git.kernel.org/stable/c/c38b1e19485aaa820e52cfe162525a8af67563da"}], "title": "firmware: arm_scmi: Avoid IDR updates while cleaning channels", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/firmware/arm_scmi/driver.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f50698c617350a6e2064dffd6cff3f391e142f55", "status": "affected", "version": "22f7f35fd71b597a5d916e41d7646be6ee530c86", "versionType": "git"}, {"lessThan": "aed24a3c63920539e9de7fbfe7929a2e7c888cd2", "status": "affected", "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "versionType": "git"}, {"lessThan": "431c6b872ba7fedcc5a3afb0ec3517db4d95d088", "status": "affected", "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "versionType": "git"}, {"lessThan": "54e5a4f7d83db4552d963d0785be32d9df680dcd", "status": "affected", "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "versionType": "git"}, {"lessThan": "bab26acebe55e8ad3ab545abda72faa7ca28c477", "status": "affected", "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "versionType": "git"}, {"lessThan": "c38b1e19485aaa820e52cfe162525a8af67563da", "status": "affected", "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/firmware/arm_scmi/driver.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.3"}, {"lessThan": "6.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "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: 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."}], "id": "CVE-2026-93086", "lastModified": "2026-10-30T13:20:56.677", "metrics": {}, "published": "2026-09-17T17:18:02.713", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/431c6b872ba7fedcc5a3afb0ec3517db4d95d088"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/54e5a4f7d83db4552d963d0785be32d9df680dcd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aed24a3c63920539e9de7fbfe7929a2e7c888cd2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bab26acebe55e8ad3ab545abda72faa7ca28c477"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c38b1e19485aaa820e52cfe162525a8af67563da"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f50698c617350a6e2064dffd6cff3f391e142f55"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1,aed24a3c63920539e9de7fbfe7929a2e7c888cd2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1,431c6b872ba7fedcc5a3afb0ec3517db4d95d088)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1,54e5a4f7d83db4552d963d0785be32d9df680dcd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1,bab26acebe55e8ad3ab545abda72faa7ca28c477)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1,c38b1e19485aaa820e52cfe162525a8af67563da)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T07:30:17.073552+00:00", "updated": "2026-09-19T19:45:11.371368+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-362"]}