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tcos: prevent out of bounds read 

Thanks oss-fuzz

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27719
This commit is contained in:
Jakub Jelen 2020-11-30 17:43:03 +01:00 committed by Jakub Jelen
parent 3ffe24cfb6
commit 78cdab949f
1 changed files with 1 additions and 1 deletions
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2
src/libopensc/pkcs15-tcos.c
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@ -152,7 +152,7 @@ static int insert_key(
sc_log(ctx, "No EF_KEYD-Record found\n");
return 1;
}
for (i = 0; i < r; i += 2 + buf[i + 1]) {
for (i = 0; i + 1 < r; i += 2 + buf[i + 1]) {
if (buf[i] == 0xB6)
can_sign++;
if (buf[i] == 0xB8)