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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/nls_base.c
parente27ecdd94d81e5bc3d1f68591701db5adb342f0d (diff)
downloadlinux-linaro-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/nls_base.c')
-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 000736d89c9..750abf211e2 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++;
}