vulnerability
Red Hat: CVE-2026-4891: dnsmasq: RRSIG rdlen underflow leading to heap OOB read (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | May 9, 2026 | May 20, 2026 | May 29, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
May 9, 2026
Added
May 20, 2026
Modified
May 29, 2026
Description
A heap-based out-of-bounds read vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.
Solutions
redhat-upgrade-dnsmasqredhat-upgrade-dnsmasq-debuginforedhat-upgrade-dnsmasq-debugsourceredhat-upgrade-dnsmasq-utilsredhat-upgrade-dnsmasq-utils-debuginfo
Rapid7 Labs
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