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patch 9.0.0024: may access part of typeahead buf that isn't filled

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Problem:    May access part of typeahead buf that isn't filled.
Solution:   Check length of typeahead.
This commit is contained in:
Bram Moolenaar
2022-07-02 12:08:16 +01:00
parent f2ce76a8c0
commit af043e12d9
2 changed files with 4 additions and 1 deletions
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3
src/getchar.c
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@@ -2437,7 +2437,8 @@ handle_mapping(
int is_plug_map = FALSE;
// If typehead starts with <Plug> then remap, even for a "noremap" mapping.
if (typebuf.tb_buf[typebuf.tb_off] == K_SPECIAL
if (typebuf.tb_len >= 3
&& typebuf.tb_buf[typebuf.tb_off] == K_SPECIAL
&& typebuf.tb_buf[typebuf.tb_off + 1] == KS_EXTRA
&& typebuf.tb_buf[typebuf.tb_off + 2] == KE_PLUG)
is_plug_map = TRUE;