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authorDavid S. Miller <davem@davemloft.net>2018-04-21 16:31:52 -0400
committerDavid S. Miller <davem@davemloft.net>2018-04-21 16:32:48 -0400
commite0ada51db907ed2db5d46ad7ff86a8b5df68e59b (patch)
tree858966cee69ad8a50e59c4e02dcbde6ba2916151 /fs/udf/unicode.c
parent0638eb573cde5888c0886c7f35da604e5db209a6 (diff)
parent83beed7b2b26f232d782127792dd0cd4362fdc41 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts were simple overlapping changes in microchip driver. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/udf/unicode.c')
-rw-r--r--fs/udf/unicode.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index f897e55f2cd0..16a8ad21b77e 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -28,6 +28,9 @@
#include "udf_sb.h"
+#define SURROGATE_MASK 0xfffff800
+#define SURROGATE_PAIR 0x0000d800
+
static int udf_uni2char_utf8(wchar_t uni,
unsigned char *out,
int boundlen)
@@ -37,6 +40,9 @@ static int udf_uni2char_utf8(wchar_t uni,
if (boundlen <= 0)
return -ENAMETOOLONG;
+ if ((uni & SURROGATE_MASK) == SURROGATE_PAIR)
+ return -EINVAL;
+
if (uni < 0x80) {
out[u_len++] = (unsigned char)uni;
} else if (uni < 0x800) {