{"api_version":"1","generated_at":"2026-10-24T13:18:36+00:00","cve":"CVE-2026-98921","urls":{"html":"https://cve.report/CVE-2026-98921","api":"https://cve.report/api/cve/CVE-2026-98921.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98921","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98921"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 13:17:12","updated_at":"2026-10-23 13:17:12"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ae146bc1abdeb4607abf2975b858c053024e8ac1","name":"https://git.kernel.org/stable/c/ae146bc1abdeb4607abf2975b858c053024e8ac1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/719bd33ab359c539a68a278c15a97deb77565cdb","name":"https://git.kernel.org/stable/c/719bd33ab359c539a68a278c15a97deb77565cdb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98921","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98921","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe497f0759e0efb949f9480911d00b6045c21f50 719bd33ab359c539a68a278c15a97deb77565cdb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe497f0759e0efb949f9480911d00b6045c21f50 ae146bc1abdeb4607abf2975b858c053024e8ac1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.9 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/overlayfs/overlayfs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"719bd33ab359c539a68a278c15a97deb77565cdb","status":"affected","version":"fe497f0759e0efb949f9480911d00b6045c21f50","versionType":"git"},{"lessThan":"ae146bc1abdeb4607abf2975b858c053024e8ac1","status":"affected","version":"fe497f0759e0efb949f9480911d00b6045c21f50","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/overlayfs/overlayfs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.9","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-10-23T12:05:33.583Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/719bd33ab359c539a68a278c15a97deb77565cdb"},{"url":"https://git.kernel.org/stable/c/ae146bc1abdeb4607abf2975b858c053024e8ac1"}],"title":"ovl: fix UAF in ovl_do_mkdir() debug print","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98921","datePublished":"2026-10-23T12:02:38.969Z","dateReserved":"2026-09-25T10:25:14.380Z","dateUpdated":"2026-10-23T12:05:33.583Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 13:17:12","lastModifiedDate":"2026-10-23 13:17:12","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98921","Ordinal":"1","Title":"ovl: fix UAF in ovl_do_mkdir() debug print","CVE":"CVE-2026-98921","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98921","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"ovl: fix UAF in ovl_do_mkdir() debug print"}]}}}