vulnerability
Alma Linux: CVE-2020-25681: Important: dnsmasq security update (ALSA-2021-0150)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:P/A:C) | Jan 20, 2021 | May 4, 2022 | Mar 31, 2026 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:C)
Published
Jan 20, 2021
Added
May 4, 2022
Modified
Mar 31, 2026
Description
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Solutions
alma-upgrade-dnsmasqalma-upgrade-dnsmasq-utils
Rapid7 Labs
2026 Global Threat Landscape Report
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