{"id":"CVE-2026-98921","revision":null,"records":[{"revision":"64d6bc6a56894ed0913f02ca6398341c","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-98921","aliases":[],"title":"ovl: fix UAF in ovl_do_mkdir() debug print","description":"In the Linux kernel, the following vulnerability has been resolved:\n\novl: fix UAF in ovl_do_mkdir() debug print\n\novl_do_mkdir() prints the input dentry with %pd after vfs_mkdir().\nSince commit fe497f0759e0 (\"VFS: change vfs_mkdir() to unlock on\nfailure.\"), vfs_mkdir() calls end_creating() on the input dentry on\nfailure and may replace it on success, so the post-call %pd can\nuse-after-free the dentry when CONFIG_OVERLAY_FS_DEBUG is enabled.\n\nPrint the dentry before the call and only the result afterward.","state":0,"publishedAt":"2026-10-23T12:02:38.969+00:00","modifiedAt":"2026-10-23T12:05:33.583+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                        \"fs/overlayfs/overlayfs.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fe497f0759e0efb949f9480911d00b6045c21f50\",\n                            \"lessThan\": \"719bd33ab359c539a68a278c15a97deb77565cdb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe497f0759e0efb949f9480911d00b6045c21f50\",\n                            \"lessThan\": \"ae146bc1abdeb4607abf2975b858c053024e8ac1\",\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                        \"fs/overlayfs/overlayfs.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\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/719bd33ab359c539a68a278c15a97deb77565cdb","https://git.kernel.org/stable/c/ae146bc1abdeb4607abf2975b858c053024e8ac1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98921","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98921","identifiers":["CVE-2026-98921"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-784961ce4a05421d9e4e38769d827822","complete":false,"records":10691,"lastAttemptAt":"2026-10-28T05:17:48.7100808+00:00","lastSuccessAt":"2026-10-28T05:17:48.706+00:00","error":"18 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-10-28T05:17:48.706+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":5982,"expectedIdentifiers":13514,"failedIdentifiers":18},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-28T05:06:15.3984380+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-28T05:06:15.398438+00:00","lastSuccessAt":"2026-10-28T05:06:15.9438631+00:00","error":null,"lastVerifiedAt":"2026-10-28T05:06:15.9438636+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-8d16a738328646698f9217d8ea11893c","complete":true,"records":13449,"lastAttemptAt":"2026-10-28T05:06:16.73458+00:00","lastSuccessAt":"2026-10-27T22:48:29.491+00:00","error":null,"lastVerifiedAt":"2026-10-27T22:48:29.491+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13514,"expectedIdentifiers":13514,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-f7cb12508d9e6a348c8a60f772ed85529cc80cd2ff853da1099b57754b20e943","complete":true,"records":9790,"lastAttemptAt":"2026-10-28T05:06:15.1305296+00:00","lastSuccessAt":"2026-10-27T21:49:03.9756799+00:00","error":null,"lastVerifiedAt":"2026-10-28T05:06:15.1305296+00:00","snapshotPublishedAt":"2026-10-27T21:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-72e5e79de0026dd0562d40734074a2236a06886643d67182b8381eaee757dbf7","complete":true,"records":1966,"lastAttemptAt":"2026-10-28T05:06:14.8565331+00:00","lastSuccessAt":"2026-10-27T21:46:38.0277323+00:00","error":null,"lastVerifiedAt":"2026-10-28T05:06:14.8565331+00:00","snapshotPublishedAt":"2026-10-27T21:18:15+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-3a5b306d60fc44677a03a8afc99d87e6c5402770ef68d560f94a8c3ad3802b75","complete":true,"records":3001,"lastAttemptAt":"2026-10-28T05:06:15.239239+00:00","lastSuccessAt":"2026-10-27T16:45:49.0050993+00:00","error":null,"lastVerifiedAt":"2026-10-28T05:06:15.239239+00:00","snapshotPublishedAt":"2026-10-27T16:33:43+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-5f3141cf1b985319fe2c9d9b1b1aab03f442c3a2272590c3c2e44d5d3d31bfb3","complete":true,"records":230854,"lastAttemptAt":"2026-10-28T05:06:15.0247794+00:00","lastSuccessAt":"2026-10-28T02:53:16.9493663+00:00","error":null,"lastVerifiedAt":"2026-10-28T05:06:15.0247794+00:00","snapshotPublishedAt":"2026-10-28T02:33:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}