smartdns: A security flaw has been discovered in pymumu SmartDNS up to 47.1
CVE-2026-1425 is fixed in smartdns on 1 platform, first by DEBIAN-CVE-2026-1425, released January 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The patch is identified as 2d57c4b4e1add9b4537aeb403f794a084727e1c8. Applying a patch is advised to resolve this issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| smartdns · Debian 13.5 (trixie) | 46.1+dfsg-1.1~deb13u1 | DEBIAN-CVE-2026-1425 | Jan 26, 2026 |
| smartdns · Debian 14 | 46.1+dfsg-1.1 | DEBIAN-CVE-2026-1425 | Jan 26, 2026 |
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