{"id":"CVE-2026-98451","summary":"smb: client: use finish_no_open() for non-regular inodes","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: use finish_no_open() for non-regular inodes\n\nAn O_CREAT open can find an existing symlink or another non-regular\ninode. cifs_atomic_open() calls finish_open() on it and attaches a\ncifsFileInfo. Symlink inodes have no CIFS release operation, so the\ndentry reference held by cifsFileInfo is leaked. FMODE_OPENED also\nprevents the VFS from following the symlink.\n\nTrack whether cifs_do_create() returned an open server handle. For\nnon-regular inodes, close the handle if present, remove the pending\nopen, and call finish_no_open() so the VFS can continue the lookup.\nDo not set FMODE_CREATED unless a regular file was opened. For\nO_NOFOLLOW with __O_REGULAR, return -ELOOP before the VFS's\n-EFTYPE check.\n\nDefer closing a legacy POSIX handle on a non-regular inode until\nafter inode lookup. This avoids closing it again if lookup fails.","modified":"2026-10-19T02:46:19.900234399Z","published":"2026-10-18T15:15:01.473Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98451.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c07deb26273155c180aedfd9041ab58015d2521"},{"type":"WEB","url":"https://git.kernel.org/stable/c/70a7918fda54a06d836acc91eb9a3c7e860fe0a0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e66cf1625ec4a3fe68346119f371def713fd0a4d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ed03d547598c92a036f20e89156540995cac889a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98451.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98451"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d2c127197dfc0b2bae62a52e1e0d3e3ff493919e"},{"fixed":"ed03d547598c92a036f20e89156540995cac889a"},{"fixed":"70a7918fda54a06d836acc91eb9a3c7e860fe0a0"},{"fixed":"3c07deb26273155c180aedfd9041ab58015d2521"},{"fixed":"e66cf1625ec4a3fe68346119f371def713fd0a4d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98451.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.6.0"},{"fixed":"6.12.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.56"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98451.json"}}],"schema_version":"1.9.0"}