CVE-2026-90139

A flaw was found in the Linux kernel's Filesystem in Userspace FUSE subsystem. When the fuseiget function fails to allocate an inode, such as under memory pressure, the subsequent fusefillsupersubmount function does not properly handle the returned null value. This oversight can lead to a null...

CVE-2026-90139 fuse: check for NULL root inode in fuse_fill_super_submount

In the Linux kernel, the following vulnerability has been resolved: fuse: check for NULL root inode in fusefillsupersubmount fuseiget can return NULL when its inode allocation fails, but fusefillsupersubmount passed the result straight to getfuseinode and decremented fi-nlookup without checking i...