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authorAndrew Bartlett <abartlet@samba.org>2013-02-11 14:46:43 +1100
committerStefan Metzmacher <metze@samba.org>2013-02-22 11:06:17 +0100
commite4d85fa73d3ce1f397fdd416af6b8c903a473824 (patch)
treef857b46c0afa12af6e3c5f0d80ac010944266c87 /source4
parent87db2331fc855473d8b3cad1c4149807823aa3c4 (diff)
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dsdb-descriptor: Avoid segfault copying an SD without an owner or group
This is an unusual SD, but it does exist is some very old upgraded databases. Andrew Bartlett Reviewed-by: Stefan Metzmacher <metze@samba.org> Autobuild-User(master): Stefan Metzmacher <metze@samba.org> Autobuild-Date(master): Fri Feb 22 11:06:17 CET 2013 on sn-devel-104
Diffstat (limited to 'source4')
-rw-r--r--source4/dsdb/samdb/ldb_modules/descriptor.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/descriptor.c b/source4/dsdb/samdb/ldb_modules/descriptor.c
index 859558ca1e..7743baaaa5 100644
--- a/source4/dsdb/samdb/ldb_modules/descriptor.c
+++ b/source4/dsdb/samdb/ldb_modules/descriptor.c
@@ -181,20 +181,28 @@ static struct security_descriptor *descr_handle_sd_flags(TALLOC_CTX *mem_ctx,
final_sd->type = SEC_DESC_SELF_RELATIVE;
if (sd_flags & (SECINFO_OWNER)) {
- final_sd->owner_sid = talloc_memdup(mem_ctx, new_sd->owner_sid, sizeof(struct dom_sid));
+ if (new_sd->owner_sid) {
+ final_sd->owner_sid = talloc_memdup(mem_ctx, new_sd->owner_sid, sizeof(struct dom_sid));
+ }
final_sd->type |= new_sd->type & SEC_DESC_OWNER_DEFAULTED;
}
else if (old_sd) {
- final_sd->owner_sid = talloc_memdup(mem_ctx, old_sd->owner_sid, sizeof(struct dom_sid));
+ if (old_sd->owner_sid) {
+ final_sd->owner_sid = talloc_memdup(mem_ctx, old_sd->owner_sid, sizeof(struct dom_sid));
+ }
final_sd->type |= old_sd->type & SEC_DESC_OWNER_DEFAULTED;
}
if (sd_flags & (SECINFO_GROUP)) {
- final_sd->group_sid = talloc_memdup(mem_ctx, new_sd->group_sid, sizeof(struct dom_sid));
+ if (new_sd->group_sid) {
+ final_sd->group_sid = talloc_memdup(mem_ctx, new_sd->group_sid, sizeof(struct dom_sid));
+ }
final_sd->type |= new_sd->type & SEC_DESC_GROUP_DEFAULTED;
}
else if (old_sd) {
- final_sd->group_sid = talloc_memdup(mem_ctx, old_sd->group_sid, sizeof(struct dom_sid));
+ if (old_sd->group_sid) {
+ final_sd->group_sid = talloc_memdup(mem_ctx, old_sd->group_sid, sizeof(struct dom_sid));
+ }
final_sd->type |= old_sd->type & SEC_DESC_GROUP_DEFAULTED;
}