CVE-2026-93073

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93073", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T15:57:05.661Z", "datePublished": "2026-09-17T16:10:56.405Z", "dateUpdated": "2026-10-19T09:05:09.113Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:05:09.113Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndax: read holder_ops once in dax_holder_notify_failure()\n\ndax_holder_notify_failure() reads dax_dev->holder_ops twice without\nREAD_ONCE() -- once for the NULL check and once for the indirect\nnotify_failure() call. A concurrent fs_put_dax() can clear holder_ops\nbetween the two reads, so the check can observe a non-NULL pointer while\nthe call dereferences NULL. (kill_dax() also clears holder_ops, but only\nafter synchronize_srcu(), so it cannot race a reader that is inside\ndax_read_lock(); fs_put_dax() does no such synchronization.)\n\nFetch holder_ops once into a local with READ_ONCE() so the NULL check and\nthe indirect call observe the same value."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/dax/super.c"], "versions": [{"version": "8012b866085523758780850087102421dbcce522", "lessThan": "1661b9bf78def01a8c96409569772d9b2592f4ba", "status": "affected", "versionType": "git"}, {"version": "8012b866085523758780850087102421dbcce522", "lessThan": "0a42180d5410c98829ee72d1d426fb7faf9e6873", "status": "affected", "versionType": "git"}, {"version": "8012b866085523758780850087102421dbcce522", "lessThan": "ee1251621d1c7cf3155c6704542cbb358d799968", "status": "affected", "versionType": "git"}, {"version": "8012b866085523758780850087102421dbcce522", "lessThan": "6a37acecc7c29136235cbc446a1b89e81414344b", "status": "affected", "versionType": "git"}, {"version": "8012b866085523758780850087102421dbcce522", "lessThan": "eb412f80311fc7ab6eb3203091a3fe59a5e9fd30", "status": "affected", "versionType": "git"}, {"version": "8012b866085523758780850087102421dbcce522", "lessThan": "7ae9d15bdcde0f2955ae13b6a95587f9e23b2359", "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/dax/super.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "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": "6.0", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1661b9bf78def01a8c96409569772d9b2592f4ba"}, {"url": "https://git.kernel.org/stable/c/0a42180d5410c98829ee72d1d426fb7faf9e6873"}, {"url": "https://git.kernel.org/stable/c/ee1251621d1c7cf3155c6704542cbb358d799968"}, {"url": "https://git.kernel.org/stable/c/6a37acecc7c29136235cbc446a1b89e81414344b"}, {"url": "https://git.kernel.org/stable/c/eb412f80311fc7ab6eb3203091a3fe59a5e9fd30"}, {"url": "https://git.kernel.org/stable/c/7ae9d15bdcde0f2955ae13b6a95587f9e23b2359"}], "title": "dax: read holder_ops once in dax_holder_notify_failure()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/dax/super.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "1661b9bf78def01a8c96409569772d9b2592f4ba", "status": "affected", "version": "8012b866085523758780850087102421dbcce522", "versionType": "git"}, {"lessThan": "0a42180d5410c98829ee72d1d426fb7faf9e6873", "status": "affected", "version": "8012b866085523758780850087102421dbcce522", "versionType": "git"}, {"lessThan": "ee1251621d1c7cf3155c6704542cbb358d799968", "status": "affected", "version": "8012b866085523758780850087102421dbcce522", "versionType": "git"}, {"lessThan": "6a37acecc7c29136235cbc446a1b89e81414344b", "status": "affected", "version": "8012b866085523758780850087102421dbcce522", "versionType": "git"}, {"lessThan": "eb412f80311fc7ab6eb3203091a3fe59a5e9fd30", "status": "affected", "version": "8012b866085523758780850087102421dbcce522", "versionType": "git"}, {"lessThan": "7ae9d15bdcde0f2955ae13b6a95587f9e23b2359", "status": "affected", "version": "8012b866085523758780850087102421dbcce522", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/dax/super.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"lessThan": "6.0", "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\ndax: read holder_ops once in dax_holder_notify_failure()\n\ndax_holder_notify_failure() reads dax_dev->holder_ops twice without\nREAD_ONCE() -- once for the NULL check and once for the indirect\nnotify_failure() call. A concurrent fs_put_dax() can clear holder_ops\nbetween the two reads, so the check can observe a non-NULL pointer while\nthe call dereferences NULL. (kill_dax() also clears holder_ops, but only\nafter synchronize_srcu(), so it cannot race a reader that is inside\ndax_read_lock(); fs_put_dax() does no such synchronization.)\n\nFetch holder_ops once into a local with READ_ONCE() so the NULL check and\nthe indirect call observe the same value."}], "id": "CVE-2026-93073", "lastModified": "2026-10-19T10:16:57.247", "metrics": {}, "published": "2026-09-17T17:18:01.207", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0a42180d5410c98829ee72d1d426fb7faf9e6873"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1661b9bf78def01a8c96409569772d9b2592f4ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6a37acecc7c29136235cbc446a1b89e81414344b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ae9d15bdcde0f2955ae13b6a95587f9e23b2359"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb412f80311fc7ab6eb3203091a3fe59a5e9fd30"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee1251621d1c7cf3155c6704542cbb358d799968"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8012b866085523758780850087102421dbcce522,1661b9bf78def01a8c96409569772d9b2592f4ba)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8012b866085523758780850087102421dbcce522,0a42180d5410c98829ee72d1d426fb7faf9e6873)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8012b866085523758780850087102421dbcce522,ee1251621d1c7cf3155c6704542cbb358d799968)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8012b866085523758780850087102421dbcce522,6a37acecc7c29136235cbc446a1b89e81414344b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8012b866085523758780850087102421dbcce522,eb412f80311fc7ab6eb3203091a3fe59a5e9fd30)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8012b866085523758780850087102421dbcce522,7ae9d15bdcde0f2955ae13b6a95587f9e23b2359)"}}], "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": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.0)"}}, {"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": "2026-09-19T06:45:17.072669+00:00", "updated": "2026-09-19T13:45:15.178347+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476", "CWE-362"]}