CVE-2025-40212

CVE-2025-40212 affects the Linux kernel NFSD code path in nfsd_set_fh_dentry(). The vulnerability occurs when a v3 (or earlier) client uses a filehandle from the pseudo root filesystem; the function can store the export in a svc_fh and drop the reference (exp_put()) in an error path, causing a us...

CVE-2025-40212 nfsd: fix refcount leak in nfsd_set_fh_dentry()

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix refcount leak in nfsdsetfhdentry nfsd exports a "pseudo root filesystem" which is used by NFSv4 to find the various exported filesystems using LOOKUP requests from a known root filehandle. NFSv3 uses the MOUNT protocol ...

PT-2025-47906

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Network File System daemon nfsd in the Linux kernel contains a flaw related to reference counting in the nfsd set fh dentry function. Specifically, when an NFSv3 or NFSv2 client uses...