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Fix heap-buffer-overflow in re_linebreak #3057

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merged 1 commit into from
Feb 11, 2020
Merged

Fix heap-buffer-overflow in re_linebreak #3057

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4 changes: 3 additions & 1 deletion src/lexer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,9 @@ namespace Sass {
const char* re_linebreak(const char* src)
{
// end of file or unix linefeed return here
if (*src == 0 || *src == '\n' || *src == '\f') return src + 1;
if (*src == 0) return src;
// end of file or unix linefeed return here
if (*src == '\n' || *src == '\f') return src + 1;
// a carriage return may optionally be followed by a linefeed
if (*src == '\r') return *(src + 1) == '\n' ? src + 2 : src + 1;
// no linefeed
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