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smbfs: read buffer overflow

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This function uses signed integers for the unix_date and local variables -
if a negative number is supplied and the leap-year condition is not met,
month will be 0, leading to a read of day_n[-1]

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roel Kluin 2009-09-22 16:43:28 -07:00 committed by Linus Torvalds
parent fa081b00a8
commit ca976c53de
1 changed files with 1 additions and 1 deletions
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2
fs/smbfs/proc.c
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@ -509,7 +509,7 @@ date_unix2dos(struct smb_sb_info *server,
month = 2;
} else {
nl_day = (year & 3) || day <= 59 ? day : day - 1;
for (month = 0; month < 12; month++)
for (month = 1; month < 12; month++)
if (day_n[month] > nl_day)
break;
}