Summary
yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child "worker" process, exchanging data with its worker processes through a D-Bus message broker.
Security Fix(es):
* net/textproto: mime/multipart: golang: golang: Denial of Service via memory limit bypass in multipart form parsing (CVE-2026-94440)
* net/[http:](http:) net/http/internal/http2: golang.org/x/net/http2: net/[http:](http:) Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669)
* crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 10 | yggdrasil | 0.4.9.2-1.el10_2.4 |
| AlmaLinux · 10 | yggdrasil-devel | 0.4.9.2-1.el10_2.4 |
Vulnerabilities 3
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High 7.5
Excessive CPU consumption from repeated initial window changes in net/http
A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.
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High 7.5
Memory limit bypass when parsing MIME headers in net/textproto, mime/multipart
Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes.
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Medium 6.8CVE-2026-111943 Public exploit
Distrust compromised intermediate certificates in crypto/x509
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in cr…
References
-
report
https://access.redhat.com/security/cve/CVE-2026-111943
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report
https://access.redhat.com/security/cve/CVE-2026-78669
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report
https://access.redhat.com/security/cve/CVE-2026-94440
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report
https://bugzilla.redhat.com/2548341
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report
https://bugzilla.redhat.com/2548344
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report
https://bugzilla.redhat.com/2556068
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advisory
https://errata.almalinux.org/10/ALSA-2026-91138.html