{"id":"CVE-2026-93073","revision":"1a100625e7b8468ba6fcf6af49eed10c","records":[{"revision":"1a100625e7b8468ba6fcf6af49eed10c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93073","aliases":[],"title":"dax: read holder_ops once in dax_holder_notify_failure()","description":"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.","state":0,"publishedAt":"2026-09-17T16:10:56.405+00:00","modifiedAt":"2026-10-19T09:05:09.113+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dax/super.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8012b866085523758780850087102421dbcce522\",\n                            \"lessThan\": \"1661b9bf78def01a8c96409569772d9b2592f4ba\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8012b866085523758780850087102421dbcce522\",\n                            \"lessThan\": \"0a42180d5410c98829ee72d1d426fb7faf9e6873\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8012b866085523758780850087102421dbcce522\",\n                            \"lessThan\": \"ee1251621d1c7cf3155c6704542cbb358d799968\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8012b866085523758780850087102421dbcce522\",\n                            \"lessThan\": \"6a37acecc7c29136235cbc446a1b89e81414344b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8012b866085523758780850087102421dbcce522\",\n                            \"lessThan\": \"eb412f80311fc7ab6eb3203091a3fe59a5e9fd30\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8012b866085523758780850087102421dbcce522\",\n                            \"lessThan\": \"7ae9d15bdcde0f2955ae13b6a95587f9e23b2359\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dax/super.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/1661b9bf78def01a8c96409569772d9b2592f4ba","https://git.kernel.org/stable/c/0a42180d5410c98829ee72d1d426fb7faf9e6873","https://git.kernel.org/stable/c/ee1251621d1c7cf3155c6704542cbb358d799968","https://git.kernel.org/stable/c/6a37acecc7c29136235cbc446a1b89e81414344b","https://git.kernel.org/stable/c/eb412f80311fc7ab6eb3203091a3fe59a5e9fd30","https://git.kernel.org/stable/c/7ae9d15bdcde0f2955ae13b6a95587f9e23b2359"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93073","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93073","identifiers":["CVE-2026-93073"]},"retained":false,"historicalAffected":[]}],"coverage":[]}