| Title | pymumu smartdns 47.1 Stack-based Buffer Overflow |
|---|
| Description | SmartDNS version 47.1 contains a stack-based buffer overflow vulnerability in the _dns_decode_SVCB_HTTPS function in src/dns.c. The issue occurs due to missing boundary checks in _dns_read_short when parsing malformed SVCB/HTTPS records. Remote attackers can exploit this via a crafted UDP packet to cause a Denial of Service (DoS) or potential information disclosure. The vendor has confirmed the issue and fixed it in commit 2d57c4b4e1add9b4537aeb403f794a084727e1c8. |
|---|
| Source | ⚠️ https://github.com/pymumu/smartdns/commit/2d57c4b4e1add9b4537aeb403f794a084727e1c8 |
|---|
| User | liloler (UID 94450) |
|---|
| Submission | 01/13/2026 03:55 (7 months ago) |
|---|
| Moderation | 01/25/2026 18:17 (13 days later) |
|---|
| Status | Accepted |
|---|
| VulDB entry | 342841 [pymumu SmartDNS up to 47.1 SVBC Record Parser src/dns.c _dns_decode_rr_head/_dns_decode_SVCB_HTTPS stack-based overflow] |
|---|
| Points | 20 |
|---|