static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
{
	struct udf_options uopt;
	struct udf_sb_info *sbi = UDF_SB(sb);
	int error = 0;

	uopt.flags = sbi->s_flags;
	uopt.uid   = sbi->s_uid;
	uopt.gid   = sbi->s_gid;
	uopt.umask = sbi->s_umask;
	uopt.fmode = sbi->s_fmode;
	uopt.dmode = sbi->s_dmode;

	if (!udf_parse_options(options, &uopt, true))
		return -EINVAL;

	write_lock(&sbi->s_cred_lock);
	sbi->s_flags = uopt.flags;
	sbi->s_uid   = uopt.uid;
	sbi->s_gid   = uopt.gid;
	sbi->s_umask = uopt.umask;
	sbi->s_fmode = uopt.fmode;
	sbi->s_dmode = uopt.dmode;
	write_unlock(&sbi->s_cred_lock);

	if (sbi->s_lvid_bh) {
		int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
		if (write_rev > UDF_MAX_WRITE_VERSION)
			*flags |= MS_RDONLY;
	}

	if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
		goto out_unlock;

	if (*flags & MS_RDONLY)
		udf_close_lvid(sb);
	else
		udf_open_lvid(sb);

out_unlock:
	return error;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.