static int local_set_mapped_file_attrat(int dirfd, const char *name,
                                        FsCred *credp)
{
    FILE *fp;
    int ret;
    char buf[ATTR_MAX];
    int uid = -1, gid = -1, mode = -1, rdev = -1;
    int map_dirfd;

    ret = mkdirat(dirfd, VIRTFS_META_DIR, 0700);
    if (ret < 0 && errno != EEXIST) {
        return -1;
    }

    map_dirfd = openat_dir(dirfd, VIRTFS_META_DIR);
    if (map_dirfd == -1) {
        return -1;
    }

    fp = local_fopenat(map_dirfd, name, "r");
    if (!fp) {
        if (errno == ENOENT) {
            goto update_map_file;
        } else {
            close_preserve_errno(map_dirfd);
            return -1;
        }
    }
    memset(buf, 0, ATTR_MAX);
    while (fgets(buf, ATTR_MAX, fp)) {
        if (!strncmp(buf, "virtfs.uid", 10)) {
            uid = atoi(buf + 11);
        } else if (!strncmp(buf, "virtfs.gid", 10)) {
            gid = atoi(buf + 11);
        } else if (!strncmp(buf, "virtfs.mode", 11)) {
            mode = atoi(buf + 12);
        } else if (!strncmp(buf, "virtfs.rdev", 11)) {
            rdev = atoi(buf + 12);
        }
        memset(buf, 0, ATTR_MAX);
    }
    fclose(fp);

update_map_file:
    fp = local_fopenat(map_dirfd, name, "w");
    close_preserve_errno(map_dirfd);
    if (!fp) {
        return -1;
    }

    if (credp->fc_uid != -1) {
        uid = credp->fc_uid;
    }
    if (credp->fc_gid != -1) {
        gid = credp->fc_gid;
    }
    if (credp->fc_mode != -1) {
        mode = credp->fc_mode;
    }
    if (credp->fc_rdev != -1) {
        rdev = credp->fc_rdev;
    }

    if (uid != -1) {
        fprintf(fp, "virtfs.uid=%d\n", uid);
    }
    if (gid != -1) {
        fprintf(fp, "virtfs.gid=%d\n", gid);
    }
    if (mode != -1) {
        fprintf(fp, "virtfs.mode=%d\n", mode);
    }
    if (rdev != -1) {
        fprintf(fp, "virtfs.rdev=%d\n", rdev);
    }
    fclose(fp);

    return 0;
}

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.