CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's NFS server, specifically in the handling of dentry references during filehandle lookups for V4ROOT exports. An attacker can exploit this flaw by crafting an NFSv3 filehandle, leading to a memory leak that could degrade system performance or stability over time. System administrators and security teams managing Linux environments with NFS services should prioritize this issue to mitigate potential impacts.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix dentry ref leak on V4ROOT export filehandle lookup nfsd_set_fh_dentry() leaks the dentry reference from exportfs_decode_fh_raw() when the NFS3_FHSIZE or NFS_FHSIZE switch cases detect NFSEXP_V4ROOT and goto out. The out: label calls exp_put() but never dput(dentry), and fhp->fh_dentry was never assigned so fh_put() cannot compensate. A crafted NFSv3 filehandle targeting a V4ROOT export's fsid triggers the leak on every request.