CVE-2026-90188

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90188", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.791Z", "datePublished": "2026-09-17T16:07:10.349Z", "dateUpdated": "2026-10-19T08:59:24.972Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:59:24.972Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: free global tag_set on init error path\n\nIf shared_tags is enabled, null_setup_tagset() allocates the global tag_set\nvia null_init_global_tag_set(). If device creation later fails, err_dev\ndestroys the default devices and calls unregister_blkdev(), but never frees\nthe global tag_set. Since module init failed, null_exit() is never invoked,\nso the global tag_set's tags and maps are permanently leaked.\n\nFree the global tag_set in err_dev, matching null_exit() which does\nif (tag_set.ops) blk_mq_free_tag_set(&tag_set)."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/null_blk/main.c"], "versions": [{"version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "lessThan": "0b2faa330184340d9418ad2c627c2ae881772e33", "status": "affected", "versionType": "git"}, {"version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "lessThan": "665c94554ff0d5d88caae7f40c16c8e0a3369eda", "status": "affected", "versionType": "git"}, {"version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "lessThan": "2882e1450fa4597811a951196e07553ea134eb31", "status": "affected", "versionType": "git"}, {"version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "lessThan": "2b59484ac1e64dd78dbe8c6140891c6308085a75", "status": "affected", "versionType": "git"}, {"version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "lessThan": "081cf37e8a0e00cd91d6df53172c9d928790a798", "status": "affected", "versionType": "git"}, {"version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "lessThan": "5a1c5ff3a49ba93a1fd0b70537e7a0164071760d", "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/block/null_blk/main.c"], "versions": [{"version": "4.13", "status": "affected"}, {"version": "0", "lessThan": "4.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "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": "4.13", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0b2faa330184340d9418ad2c627c2ae881772e33"}, {"url": "https://git.kernel.org/stable/c/665c94554ff0d5d88caae7f40c16c8e0a3369eda"}, {"url": "https://git.kernel.org/stable/c/2882e1450fa4597811a951196e07553ea134eb31"}, {"url": "https://git.kernel.org/stable/c/2b59484ac1e64dd78dbe8c6140891c6308085a75"}, {"url": "https://git.kernel.org/stable/c/081cf37e8a0e00cd91d6df53172c9d928790a798"}, {"url": "https://git.kernel.org/stable/c/5a1c5ff3a49ba93a1fd0b70537e7a0164071760d"}], "title": "null_blk: free global tag_set on init error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/block/null_blk/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0b2faa330184340d9418ad2c627c2ae881772e33", "status": "affected", "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "versionType": "git"}, {"lessThan": "665c94554ff0d5d88caae7f40c16c8e0a3369eda", "status": "affected", "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "versionType": "git"}, {"lessThan": "2882e1450fa4597811a951196e07553ea134eb31", "status": "affected", "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "versionType": "git"}, {"lessThan": "2b59484ac1e64dd78dbe8c6140891c6308085a75", "status": "affected", "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "versionType": "git"}, {"lessThan": "081cf37e8a0e00cd91d6df53172c9d928790a798", "status": "affected", "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "versionType": "git"}, {"lessThan": "5a1c5ff3a49ba93a1fd0b70537e7a0164071760d", "status": "affected", "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/block/null_blk/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.13"}, {"lessThan": "4.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "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\nnull_blk: free global tag_set on init error path\n\nIf shared_tags is enabled, null_setup_tagset() allocates the global tag_set\nvia null_init_global_tag_set(). If device creation later fails, err_dev\ndestroys the default devices and calls unregister_blkdev(), but never frees\nthe global tag_set. Since module init failed, null_exit() is never invoked,\nso the global tag_set's tags and maps are permanently leaked.\n\nFree the global tag_set in err_dev, matching null_exit() which does\nif (tag_set.ops) blk_mq_free_tag_set(&tag_set)."}], "id": "CVE-2026-90188", "lastModified": "2026-10-19T09:19:08.810", "metrics": {}, "published": "2026-09-17T17:17:13.397", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/081cf37e8a0e00cd91d6df53172c9d928790a798"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b2faa330184340d9418ad2c627c2ae881772e33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2882e1450fa4597811a951196e07553ea134eb31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b59484ac1e64dd78dbe8c6140891c6308085a75"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5a1c5ff3a49ba93a1fd0b70537e7a0164071760d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/665c94554ff0d5d88caae7f40c16c8e0a3369eda"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[82f402fefa50f1675bf918bcd009981bd6b30ac8,0b2faa330184340d9418ad2c627c2ae881772e33)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[82f402fefa50f1675bf918bcd009981bd6b30ac8,665c94554ff0d5d88caae7f40c16c8e0a3369eda)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[82f402fefa50f1675bf918bcd009981bd6b30ac8,2882e1450fa4597811a951196e07553ea134eb31)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[82f402fefa50f1675bf918bcd009981bd6b30ac8,2b59484ac1e64dd78dbe8c6140891c6308085a75)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[82f402fefa50f1675bf918bcd009981bd6b30ac8,081cf37e8a0e00cd91d6df53172c9d928790a798)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[82f402fefa50f1675bf918bcd009981bd6b30ac8,5a1c5ff3a49ba93a1fd0b70537e7a0164071760d)"}}], "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": "4.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.188,6.2.0)"}}, {"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": "2026-09-18T19:15:11.467638+00:00", "updated": "2026-09-20T02:15:17.055656+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-400"]}