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| author | Roel Kluin <roel.kluin@gmail.com> | 2009-09-22 16:45:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:42 -0700 |
| commit | c5df59136a55fe08c21d39321679cbb008479edf (patch) | |
| tree | 1ee4e37aba1555f5558e0eb43d5f7093bc82af98 /fs/ncpfs | |
| parent | a7e3108cca54c105f496919040f00df56767ec00 (diff) | |
| download | lwn-c5df59136a55fe08c21d39321679cbb008479edf.tar.gz lwn-c5df59136a55fe08c21d39321679cbb008479edf.zip | |
ncpfs: read buffer overflow
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 later read of day_n[-1]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ncpfs')
| -rw-r--r-- | fs/ncpfs/dir.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index 9c590722d87e..b8b5b30d53f0 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -1241,7 +1241,7 @@ ncp_date_unix2dos(int unix_date, __le16 *time, __le16 *date) 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; } |