CVEvulnerability
CVE-2026-2291
7.3 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-05-11
- Last modified
- 2026-07-20
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.3 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Description
dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.
References
- https://github.com/NixOS/nixpkgs/pull/519082 github.com
- https://github.com/NixOS/nixpkgs/pull/519093 github.com
- https://github.com/pi-hole/FTL/releases/tag/v6.6.2 github.com
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html lists.thekelleys.org.uk
- https://thekelleys.org.uk/dnsmasq/CVE/ thekelleys.org.uk
- https://www.kb.cert.org/vuls/id/471747 www.kb.cert.org
- https://www.suse.com/security/cve/CVE-2026-2291.html www.suse.com
- http://www.openwall.com/lists/oss-security/2026/07/20/14 www.openwall.com