Bug 2418105 - CVE-2025-64076 python-cbor2: cbor2: Integer Underflow and Memory Leak leading to Denial of Service [fedora-42]
Summary: CVE-2025-64076 python-cbor2: cbor2: Integer Underflow and Memory Leak leading...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: python-cbor2
Version: 42
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Carl George 🤠
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["baada591-dbb9-4e1a-b074-6...
Depends On:
Blocks: CVE-2025-64076
TreeView+ depends on / blocked
 
Reported: 2025-12-01 20:50 UTC by Praise Ogwuche
Modified: 2026-04-22 11:41 UTC (History)
3 users (show)

Fixed In Version: python-cbor2-5.6.5-8.fc42
Clone Of:
Environment:
Last Closed: 2026-04-22 11:41:14 UTC
Type: ---
Embargoed:
fedora-admin-xmlrpc: mirror+


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker FC-2665 0 None None None 2025-12-12 04:02:20 UTC

Description Praise Ogwuche 2025-12-01 20:50:02 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 following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams

Comment 1 Fedora Update System 2026-04-11 00:28:22 UTC
FEDORA-2026-0afc953516 (python-cbor2-5.6.5-8.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-0afc953516

Comment 2 Fedora Update System 2026-04-13 02:21:55 UTC
FEDORA-2026-0afc953516 has been pushed to the Fedora 42 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-0afc953516`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-0afc953516

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2026-04-22 11:41:14 UTC
FEDORA-2026-0afc953516 (python-cbor2-5.6.5-8.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.


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