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autofs-5.1.0 - fix FILE pointer check in defaults_read_config()
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From: Ian Kent <raven@themaw.net>
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Fix possible use after free usage of FILE pointer in defaults_read_config().
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---
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CHANGELOG | 1 +
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lib/defaults.c | 15 +++++++--------
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2 files changed, 8 insertions(+), 8 deletions(-)
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--- autofs-5.0.7.orig/CHANGELOG
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+++ autofs-5.0.7/CHANGELOG
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@@ -132,6 +132,7 @@
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- fix race accessing qdn in get_query_dn().
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- fix leak in cache_push_mapent().
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- fix config entry read buffer not checked.
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+- fix FILE pointer check in defaults_read_config().
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25/07/2012 autofs-5.0.7
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=======================
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--- autofs-5.0.7.orig/lib/defaults.c
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+++ autofs-5.0.7/lib/defaults.c
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@@ -1055,6 +1055,8 @@ unsigned int defaults_read_config(unsign
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ret = 1;
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+ conf = oldconf = NULL;
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+
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pthread_mutex_lock(&conf_mutex);
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if (!config) {
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if (conf_init()) {
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@@ -1081,15 +1083,11 @@ unsigned int defaults_read_config(unsign
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stb.st_mtime <= config->modified &&
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(oldstat = fstat(fileno(oldconf), &oldstb) == -1) &&
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oldstb.st_mtime <= config->modified) {
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- fclose(conf);
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- fclose(oldconf);
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goto out;
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}
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if (conf || oldconf) {
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if (!reset_defaults(to_syslog)) {
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- fclose(conf);
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- fclose(oldconf);
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ret = 0;
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goto out;
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}
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@@ -1107,10 +1105,8 @@ unsigned int defaults_read_config(unsign
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}
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}
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- if (conf) {
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+ if (conf)
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read_config(to_syslog, conf, DEFAULT_CONFIG_FILE);
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- fclose(conf);
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- }
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/*
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* Read the old config file and override the installed
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@@ -1131,7 +1127,6 @@ unsigned int defaults_read_config(unsign
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clean_ldap_multi_option(NAME_LDAP_URI);
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read_config(to_syslog, oldconf, OLD_CONFIG_FILE);
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- fclose(oldconf);
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if (ldap_search_base) {
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co = conf_lookup(sec, NAME_SEARCH_BASE);
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@@ -1150,6 +1145,10 @@ unsigned int defaults_read_config(unsign
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}
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}
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out:
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+ if (conf)
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+ fclose(conf);
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+ if (oldconf)
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+ fclose(oldconf);
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pthread_mutex_unlock(&conf_mutex);
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return ret;
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}
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