Bug 2545211 - CVE-2026-94083 suricata: suricata: type confusion and invalid free in DoH2 protocol handling [fedora-all]
Summary: CVE-2026-94083 suricata: suricata: type confusion and invalid free in DoH2 pr...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: suricata
Version: rawhide
Hardware: Unspecified
OS: Unspecified
urgent
urgent
Target Milestone: ---
Assignee: Steve Grubb
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["f8e71063-573b-4bb0-a1ca-b...
Depends On:
Blocks: CVE-2026-94083
TreeView+ depends on / blocked
 
Reported: 2026-10-02 14:10 UTC by Joel Chamberlain
Modified: 2026-10-02 14:10 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Joel Chamberlain 2026-10-02 14:10:11 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual state is HTTP1 (when there is a DoH2 request with an HTTP1 to HTTP2 upgrade). This requires app-layer.protocols.doh2 to be enabled, which is the default in 8.x versions.
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