Bug 2521980 - CVE-2026-77587 tor: Tor: Denial of Service via use-after-free vulnerability [epel-all]
Summary: CVE-2026-77587 tor: Tor: Denial of Service via use-after-free vulnerability [...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: tor
Version: epel10
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Marcel Haerry
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["c7e48dbe-888f-417f-8f0b-1...
Depends On:
Blocks: CVE-2026-77587
TreeView+ depends on / blocked
 
Reported: 2026-08-24 14:44 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 00:41:41 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Vladimir Vasilev 2026-08-24 14:44:16 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 use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. This is TROVE-2026-026.

Comment 1 Fedora Update System 2026-10-08 13:47:04 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 13:48:15 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 02:26:32 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 02:33:08 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 00:41:41 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 01:21:35 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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