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| author | Marko Mäkelä <marko.makela@mariadb.com> | 2017-09-01 12:45:33 +0300 |
|---|---|---|
| committer | Marko Mäkelä <marko.makela@mariadb.com> | 2017-09-01 12:47:50 +0300 |
| commit | 8a8cca2865222686c0ad4336220673f6be8eb14c (patch) | |
| tree | 8f53baebaec767fcca0eeb6ef21f96ed216871db /sql/set_var.cc | |
| parent | 4e1fa7f63da580c1e0e4256bc4af3c02cdc51939 (diff) | |
| download | mariadb-git-8a8cca2865222686c0ad4336220673f6be8eb14c.tar.gz | |
Fix a buffer overflow in INFORMATION_SCHEMA.GLOBAL_VARIABLES, caused by MDEV-12179
pretty_print_engine_list(): When the plugin list is empty, return
an empty string instead of allocating a buffer of 0 bytes and then
trying to write a NUL byte into it.
Diffstat (limited to 'sql/set_var.cc')
| -rw-r--r-- | sql/set_var.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/set_var.cc b/sql/set_var.cc index 606f9ac511d..311b33bc0dd 100644 --- a/sql/set_var.cc +++ b/sql/set_var.cc @@ -1483,7 +1483,7 @@ pretty_print_engine_list(THD *thd, plugin_ref *list) size_t size; char *buf, *pos; - if (!list) + if (!list || !*list) return thd->strmake("", 0); size= 0; |