From 2972b1637654e0c6ca0d7201384331dc250b2dc8 Mon Sep 17 00:00:00 2001 From: Kazuya Mio Date: Mon, 18 Apr 2011 20:11:39 +0000 Subject: [PATCH] tune2fs: Fix overflow of interval check Add the check of maximum check interval. s_checkinterval is 32bit variable, so it cannot be set more than 2^32. Signed-off-by: Kazuya Mio Signed-off-by: Theodore Ts'o --- misc/tune2fs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/misc/tune2fs.c b/misc/tune2fs.c index 9d2b12c..7d5c092 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -1701,6 +1701,12 @@ retry_open: printf(_("Setting reserved blocks gid to %lu\n"), resgid); } if (i_flag) { + if (interval >= (1ULL << 32)) { + com_err(program_name, 0, + _("interval between checks is too big (%lu)"), + interval); + exit(1); + } sb->s_checkinterval = interval; ext2fs_mark_super_dirty(fs); printf(_("Setting interval between checks to %lu seconds\n"), -- 1.8.3.1