CyberRota Analysis
AI-GeneratedThe vulnerability affects Linux systems running version 6.15 and later, specifically through the X-mount.subdir option, which improperly handles symlink traversal during the mounting process. This flaw allows a local unprivileged user with an authorized fstab entry to mount a host path at the intended mountpoint, potentially leading to unauthorized access to sensitive data. System administrators and security teams should prioritize addressing this issue to mitigate the risk of local privilege escalation and data exposure.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to open_tree() with AT_SYMLINK_NOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with an fstab-authorized X-mount.subdir entry can attach a host path at the intended mountpoint.