CVE-2026-98451
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: smb: client: use finish_no_open() for non-regular inodes An O_CREAT open can find an existing symlink or another non-regular inode. cifs_atomic_open() calls finish_open() on it and attaches a cifsFileInfo. Symlink inodes have no CIFS release operation, so the dentry reference held by cifsFileInfo is leaked. FMODE_OPENED also prevents the VFS from following the symlink. Track whether cifs_do_create() returned an open server handle. For non-regular inodes, close the handle if present, remove the pending open, and call finish_no_open() so the VFS can continue the lookup. Do not set FMODE_CREATED unless a regular file was opened. For O_NOFOLLOW with __O_REGULAR, return -ELOOP before the VFS's -EFTYPE check. Defer closing a legacy POSIX handle on a non-regular inode until after inode lookup. This avoids closing it again if lookup fails.
Yayın: 18.10.2026 · Son değişiklik: 24.10.2026
CVSS 3.1 metrikleri
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
| Saldırı vektörü | Ağ (uzaktan) |
| Karmaşıklık | Düşük |
| Gereken yetki | Yok |
| Kullanıcı etkileşimi | Gerekli |
| Kapsam | Değişmez |
| Gizlilik | Yüksek |
| Bütünlük | Yüksek |
| Erişilebilirlik | Yüksek |
Hesaplanan temel puan: 8.8. CVSS hesaplayıcıda incele
Referanslar
- https://git.kernel.org/stable/c/045532f920d86dd76600b635f9756e5fd671ddfc
- https://git.kernel.org/stable/c/3c07deb26273155c180aedfd9041ab58015d2521
- https://git.kernel.org/stable/c/70a7918fda54a06d836acc91eb9a3c7e860fe0a0
- https://git.kernel.org/stable/c/e66cf1625ec4a3fe68346119f371def713fd0a4d
- https://git.kernel.org/stable/c/ed03d547598c92a036f20e89156540995cac889a