kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-10-12 15:45:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

dns_core: Protect against array index violation.

Browse Source 
Add a check to allocate_dns_record to prevent calling a pointer
retrieved from beyond dns_alloc_table.

ASTERISK-27495 #close

Change-Id: Ie2f6e4991cea46baa12e837bd64cc22b44d322bb
This commit is contained in:
Corey Farrell
2017-12-18 23:48:52 -05:00
parent a100baccb5
commit b8f54f742f
1 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
main/dns_core.c
View File

@@ -447,9 +447,13 @@ static dns_alloc_fn dns_alloc_table [] = {
[T_SRV] = dns_srv_alloc,
};
static struct ast_dns_record *allocate_dns_record(int rr_type, struct ast_dns_query *query, const char *data, const size_t size)
static struct ast_dns_record *allocate_dns_record(unsigned int rr_type, struct ast_dns_query *query, const char *data, const size_t size)
{
dns_alloc_fn allocator = dns_alloc_table[rr_type] ?: generic_record_alloc;
dns_alloc_fn allocator = generic_record_alloc;
if (rr_type < ARRAY_LEN(dns_alloc_table) && dns_alloc_table[rr_type]) {
allocator = dns_alloc_table[rr_type];
}
return allocator(query, data, size);
}