{"id":"CVE-2026-98921","title":"ovl: fix UAF in ovl_do_mkdir() debug print","summary":"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 un…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= fe497f0759e0efb949f9480911d00b6045c21f50 < 719bd33ab359c539a68a278c15a97deb77565cdb","Linux >= fe497f0759e0efb949f9480911d00b6045c21f50 < ae146bc1abdeb4607abf2975b858c053024e8ac1","Linux 6.19"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T12:05:33.583Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98921","references":[{"url":"https://git.kernel.org/stable/c/719bd33ab359c539a68a278c15a97deb77565cdb"},{"url":"https://git.kernel.org/stable/c/ae146bc1abdeb4607abf2975b858c053024e8ac1"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T13:24:55.569Z","slug":"CVE-2026-98921","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= fe497f0759e0efb949f9480911d00b6045c21f50 < 719bd33ab359c539a68a278c15a97deb77565cdb`\n- `Linux >= fe497f0759e0efb949f9480911d00b6045c21f50 < ae146bc1abdeb4607abf2975b858c053024e8ac1`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}