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MDEV-36245 - Long server_audit_file_path causes buffer overflow #3874

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MDEV-36245 - Long server_audit_file_path causes buffer overflow #3874

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8 changes: 8 additions & 0 deletions plugin/server_audit/server_audit.c
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Original file line number Diff line number Diff line change
@@ -2836,6 +2836,14 @@ static void update_file_path(MYSQL_THD thd,
{
char *new_name= (*(char **) save) ? *(char **) save : empty_str;

if (strlen(new_name) + 4 > FN_REFLEN)
{
error_header();
fprintf(stderr, "server_audit_file_path can't exceed %d characters.\n", FN_REFLEN - 4);
CLIENT_ERROR(1, "server_audit_file_path can't exceed %d characters.\n", MYF(ME_WARNING), FN_REFLEN - 4);
return;
}

ADD_ATOMIC(internal_stop_logging, 1);
error_header();
fprintf(stderr, "Log file name was changed to '%s'.\n", new_name);