Bug 2543705 - CVE-2026-84782 ruby: openssl: Information disclosure via DTLS handshake retransmission [fedora-all]
Summary: CVE-2026-84782 ruby: openssl: Information disclosure via DTLS handshake retra...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: ruby
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Vít Ondruch
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["57c69a43-7943-4481-9b6e-c...
Depends On:
Blocks: CVE-2026-84782
TreeView+ depends on / blocked
 
Reported: 2026-09-29 21:45 UTC by Marco Benatto
Modified: 2026-09-30 07:19 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-09-30 07:19:53 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Marco Benatto 2026-09-29 21:45:36 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.

The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through.
The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly.

Comment 1 Jarek Prokop 2026-09-30 07:19:53 UTC
This CVE is for OpenSSL C library that we link dynamically against, not statically, the vulnerable code is not present in this component.
`rubygem-openssl != OpenSSL`.


Note You need to log in before you can comment on or make changes to this bug.