Bug 2521284 - CVE-2026-77638 tor: Tor: Onion Service Impersonation via Race Condition [epel-all]
Summary: CVE-2026-77638 tor: Tor: Onion Service Impersonation via Race Condition [epel...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: tor
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Marcel Haerry
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["761f7b24-ce1d-449a-9089-f...
Depends On:
Blocks: CVE-2026-77638
TreeView+ depends on / blocked
 
Reported: 2026-08-22 11:47 UTC by Vladimir Vasilev
Modified: 2026-10-17 01:21 UTC (History)
4 users (show)

Fixed In Version: tor-0.4.9.14-1.el9 tor-0.4.9.14-1.el10_4
Clone Of:
Environment:
Last Closed: 2026-10-17 00:41:27 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Vladimir Vasilev 2026-08-22 11:47:31 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.

Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client was trying to reach.
Comment 1 Fedora Update System 2026-10-08 13:48:21 UTC 
FEDORA-EPEL-2026-2cce141a86 (tor-0.4.9.14-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-2cce141a86
Comment 2 Fedora Update System 2026-10-08 13:48:31 UTC 
FEDORA-EPEL-2026-4032d817f5 (tor-0.4.9.14-1.el10_4) has been submitted as an update to Fedora EPEL 10.4.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4032d817f5
Comment 3 Fedora Update System 2026-10-09 02:26:24 UTC 
FEDORA-EPEL-2026-2cce141a86 has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-2cce141a86

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 4 Fedora Update System 2026-10-09 02:33:00 UTC 
FEDORA-EPEL-2026-4032d817f5 has been pushed to the Fedora EPEL 10.4 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4032d817f5

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 5 Fedora Update System 2026-10-17 00:41:27 UTC 
FEDORA-EPEL-2026-2cce141a86 (tor-0.4.9.14-1.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 6 Fedora Update System 2026-10-17 01:21:27 UTC 
FEDORA-EPEL-2026-4032d817f5 (tor-0.4.9.14-1.el10_4) has been pushed to the Fedora EPEL 10.4 stable repository.
If problem still persists, please make note of it in this bug report.
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