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patch 8.2.3246: memory use after free

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Problem:    Memory use after free.
Solution:   When clearing a string option set the pointer to "empty_option".
This commit is contained in:
Bram Moolenaar
2021-07-29 21:11:30 +02:00
parent 131530a54d
commit 77111e2bfc
2 changed files with 3 additions and 1 deletions
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2
src/option.c
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@@ -807,7 +807,7 @@ free_all_options(void)
else if (options[i].var != VAR_WIN else if (options[i].var != VAR_WIN
&& (options[i].flags & P_STRING)) && (options[i].flags & P_STRING))
// buffer-local option: free global value // buffer-local option: free global value
free_string_option(*(char_u **)options[i].var); clear_string_option((char_u **)options[i].var);
} }
} }
#endif #endif

2
src/version.c
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@@ -755,6 +755,8 @@ static char *(features[]) =
static int included_patches[] = static int included_patches[] =
{ /* Add new patch number below this line */ { /* Add new patch number below this line */
/**/
3246,
/**/ /**/
3245, 3245,
/**/ /**/