static int v9fs_complete_renameat(V9fsPDU *pdu, int32_t olddirfid,
                                  V9fsString *old_name, int32_t newdirfid,
                                  V9fsString *new_name)
{
    int err = 0;
    V9fsState *s = pdu->s;
    V9fsFidState *newdirfidp = NULL, *olddirfidp = NULL;

    olddirfidp = get_fid(pdu, olddirfid);
    if (olddirfidp == NULL) {
        err = -ENOENT;
        goto out;
    }
    if (newdirfid != -1) {
        newdirfidp = get_fid(pdu, newdirfid);
        if (newdirfidp == NULL) {
            err = -ENOENT;
            goto out;
        }
    } else {
        newdirfidp = get_fid(pdu, olddirfid);
    }

    err = v9fs_co_renameat(pdu, &olddirfidp->path, old_name,
                           &newdirfidp->path, new_name);
    if (err < 0) {
        goto out;
    }
    if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
        /* Only for path based fid  we need to do the below fixup */
        v9fs_fix_fid_paths(pdu, &olddirfidp->path, old_name,
                           &newdirfidp->path, new_name);
    }
out:
    if (olddirfidp) {
        put_fid(pdu, olddirfidp);
    }
    if (newdirfidp) {
        put_fid(pdu, newdirfidp);
    }
    return err;
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.