Bug 2508544 - CVE-2026-65100 trafficserver: HPACK encoder desynchronizes from the decoder after a failed header encode [fedora-all]
Summary: CVE-2026-65100 trafficserver: HPACK encoder desynchronizes from the decoder a...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: trafficserver
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Jered Floyd
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["c3ca23c3-9384-461c-944f-8...
Depends On:
Blocks: CVE-2026-65100
TreeView+ depends on / blocked
 
Reported: 2026-07-29 19:52 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-08-06 17:16 UTC (History)
1 user (show)

Fixed In Version: trafficserver-10.1.4-1.fc44
Clone Of:
Environment:
Last Closed: 2026-08-06 17:16:21 UTC
Type: ---
Embargoed:

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Description Guilherme de Almeida Suckevicz 2026-07-29 19:52:00 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.

Apache Traffic Server updates the HTTP/2 HPACK dynamic table before confirming the header block encoded successfully, so an encode failure leaves the encoder out of sync with the peer decoder and corrupts subsequent header blocks on the connection.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Comment 1 Fedora Update System 2026-07-29 23:05:47 UTC 
FEDORA-2026-5bec7441bb (trafficserver-10.1.4-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5bec7441bb
Comment 2 Fedora Update System 2026-08-06 17:16:21 UTC 
FEDORA-2026-5bec7441bb (trafficserver-10.1.4-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.
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