autofs-5.1.3 - fix possible map instance memory leak From: Ian Kent <raven@themaw.net> When using a temporary map unconditionally updating the original map instance pointer will lead to a memory leak when the instance pointer is already set (among other problems). Signed-off-by: Ian Kent <raven@themaw.net> --- CHANGELOG | 1 + daemon/lookup.c | 6 ++++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/CHANGELOG b/CHANGELOG index 1b5c69ee..fab5ed49 100644 --- a/CHANGELOG +++ b/CHANGELOG @@ -18,6 +18,7 @@ xx/xx/2017 autofs-5.1.4 - add some more debug logging to get_supported_ver_and_cost(). - fix ipv6 proto option handling. - also check flag file exe name. +- fix possible map instance memory leak. 24/05/2017 autofs-5.1.3 ======================= diff --git a/daemon/lookup.c b/daemon/lookup.c index 583d3d37..569fffaf 100644 --- a/daemon/lookup.c +++ b/daemon/lookup.c @@ -536,7 +536,8 @@ static enum nsswitch_status read_map_source(struct nss_source *this, result = read_file_source_instance(ap, &tmap, age); pthread_cleanup_pop(1); - map->instance = tmap.instance; + if (!map->instance) + map->instance = tmap.instance; return result; } @@ -1089,7 +1090,8 @@ static enum nsswitch_status lookup_map_name(struct nss_source *this, result = lookup_name_file_source_instance(ap, &tmap, name, name_len); - map->instance = tmap.instance; + if (!map->instance) + map->instance = tmap.instance; /* path is freed in free_argv */ free_argv(tmap.argc, tmap.argv);