CVE-2026-90227

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90227", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.794Z", "datePublished": "2026-09-17T16:07:35.989Z", "dateUpdated": "2026-10-19T09:00:03.749Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:00:03.749Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()\n\nUnlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls\nnvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a\npartition device or write through a read-only file descriptor.\n\nPass flags and open_for_write through and reject disallowed commands\nwith -EACCES."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Attacker-controlled opcode/slba/nblocks enter via copy_from_user of struct nvme_user_io in nvme_submit_io(), reached only through ioctl(NVME_IOCTL_SUBMIT_IO) on an NVMe block or ng* char node (blkdev_ioctl \u2192 nvme_ioctl / nvme_ns_chr_ioctl \u2192 nvme_ns_ioctl). No remote protocol carries that payload.\nAC:L - nvme_submit_io() copies the user nvme_user_io, accepts nvme_cmd_read/write/compare, and submits with the caller-chosen io.slba; there is no race or layout dependency, so the same ioctl reliably performs the I/O.\nPR:L - nvme_open()/nvme_ns_chr_open() impose no capability check, and the vulnerable nvme_submit_io() path never called nvme_cmd_allowed(), the only CAP_SYS_ADMIN gate for partition and read-only-fd I/O. An unprivileged user who can open a partition or O_RDONLY NVMe node can issue the ioctl.\nUI:N - The attacker opens the NVMe node they already control and issues NVME_IOCTL_SUBMIT_IO themselves; no other user must mount media, pass a file, or otherwise act.\nS:U - Skipping nvme_cmd_allowed() lets the caller read and write other LBAs of the same NVMe namespace in the host kernel. That is intra-OS partition/fd-mode bypass, not a VM, IOMMU, or guest-to-host boundary crossing.\nC:H - On a partition bdev, nvme_ioctl() still uses bdev->bd_disk->private_data (the whole namespace) and nvme_submit_io() programs c.rw.slba from attacker io.slba without adding bd_start_sect, so nvme_cmd_read returns arbitrary namespace LBAs including other partitions.\nI:H - The same path accepts io.opcode=nvme_cmd_write and, because nvme_cmd_allowed() is not called, ignores NVME_IOCTL_PARTITION and !open_for_write, so the attacker can persist writes to any namespace LBA from a partition fd or an O_RDONLY descriptor.\nA:H - Those unscoped nvme_cmd_write commands can overwrite other partitions' metadata, swap, or the OS image on the same namespace, persistently denying use of the host or co-tenant volumes (the failure mode nvme_cmd_allowed() exists to prevent)."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/host/ioctl.c"], "versions": [{"version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "lessThan": "c35cd98eed1a863e8dd51073953563cd8c907f68", "status": "affected", "versionType": "git"}, {"version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "lessThan": "95b0591d51dbf9e618d7845883d535e88ad7c8af", "status": "affected", "versionType": "git"}, {"version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "lessThan": "736b7c6adc7a65c4411beff197b6a634f7a6ca27", "status": "affected", "versionType": "git"}, {"version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "lessThan": "b116e9dae433ff631f94c36c61a7a78fe400ed1e", "status": "affected", "versionType": "git"}, {"version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "lessThan": "b53d495c7f0db46b6748b5ade48371a10dd5d3bc", "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/nvme/host/ioctl.c"], "versions": [{"version": "3.3", "status": "affected"}, {"version": "0", "lessThan": "3.3", "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": "3.3", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c35cd98eed1a863e8dd51073953563cd8c907f68"}, {"url": "https://git.kernel.org/stable/c/95b0591d51dbf9e618d7845883d535e88ad7c8af"}, {"url": "https://git.kernel.org/stable/c/736b7c6adc7a65c4411beff197b6a634f7a6ca27"}, {"url": "https://git.kernel.org/stable/c/b116e9dae433ff631f94c36c61a7a78fe400ed1e"}, {"url": "https://git.kernel.org/stable/c/b53d495c7f0db46b6748b5ade48371a10dd5d3bc"}], "title": "nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvme/host/ioctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c35cd98eed1a863e8dd51073953563cd8c907f68", "status": "affected", "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "versionType": "git"}, {"lessThan": "95b0591d51dbf9e618d7845883d535e88ad7c8af", "status": "affected", "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "versionType": "git"}, {"lessThan": "736b7c6adc7a65c4411beff197b6a634f7a6ca27", "status": "affected", "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "versionType": "git"}, {"lessThan": "b116e9dae433ff631f94c36c61a7a78fe400ed1e", "status": "affected", "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "versionType": "git"}, {"lessThan": "b53d495c7f0db46b6748b5ade48371a10dd5d3bc", "status": "affected", "version": "a53295b6998f62d961c29e54051c1cf1d738c2b3", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvme/host/ioctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.3"}, {"lessThan": "3.3", "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\nnvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()\n\nUnlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls\nnvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a\npartition device or write through a read-only file descriptor.\n\nPass flags and open_for_write through and reject disallowed commands\nwith -EACCES."}], "id": "CVE-2026-90227", "lastModified": "2026-10-19T09:19:13.030", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-17T17:17:18.400", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/736b7c6adc7a65c4411beff197b6a634f7a6ca27"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95b0591d51dbf9e618d7845883d535e88ad7c8af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b116e9dae433ff631f94c36c61a7a78fe400ed1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b53d495c7f0db46b6748b5ade48371a10dd5d3bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c35cd98eed1a863e8dd51073953563cd8c907f68"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c35cd98eed1a863e8dd51073953563cd8c907f68)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,95b0591d51dbf9e618d7845883d535e88ad7c8af)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,736b7c6adc7a65c4411beff197b6a634f7a6ca27)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b116e9dae433ff631f94c36c61a7a78fe400ed1e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b53d495c7f0db46b6748b5ade48371a10dd5d3bc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.157)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.110)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.52)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.2.6)"}}], "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": "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": "2026-09-18T20:30:15.712767+00:00", "updated": "2026-09-20T02:45:18.433213+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-284"]}