aboutsummaryrefslogtreecommitdiff
path: root/fs/nls
diff options
context:
space:
mode:
authorClemens Ladisch <clemens@ladisch.de>2009-04-24 10:11:56 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-15 21:44:43 -0700
commit905c02acbd89f427c87a6d0a50fed757f6b3001c (patch)
treea4844dac7cd7bbce34ab33295eaa402d996e9b48 /fs/nls
parente27ecdd94d81e5bc3d1f68591701db5adb342f0d (diff)
downloadlinux-stericsson-905c02acbd89f427c87a6d0a50fed757f6b3001c.tar.gz
nls: utf8_wcstombs: fix buffer overflow
utf8_wcstombs forgot to include one-byte UTF-8 characters when calculating the output buffer size, i.e., theoretically, it was possible to overflow the output buffer with an input string that contains enough ASCII characters. In practice, this was no problem because the only user so far (VFAT) always uses a big enough output buffer. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/nls')
-rw-r--r--fs/nls/nls_base.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
index 000736d89c95..750abf211e26 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -150,6 +150,7 @@ utf8_wcstombs(__u8 *s, const wchar_t *pwcs, int maxlen)
}
} else {
*op++ = (__u8) *ip;
+ maxlen--;
}
ip++;
}