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Merge pull request #5011 from Pamplemousse/fix_adjustLoc

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libexpr: Fix read out-of-bound on the heap
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Eelco Dolstra 2021-07-15 09:23:59 +02:00 committed by GitHub
parent bee71d692a 99f8fc995b
commit 77d5b37da3
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 2 deletions
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6
src/libexpr/lexer.l
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@ -38,11 +38,13 @@ static void adjustLoc(YYLTYPE * loc, const char * s, size_t len)
loc->first_line = loc->last_line; loc->first_line = loc->last_line;
loc->first_column = loc->last_column; loc->first_column = loc->last_column;
while (len--) { for (size_t i = 0; i < len; i++) {
switch (*s++) { switch (*s++) {
case '\r': case '\r':
if (*s == '\n') /* cr/lf */ if (*s == '\n') { /* cr/lf */
i++;
s++; s++;
}
/* fall through */ /* fall through */
case '\n': case '\n':
++loc->last_line; ++loc->last_line;