Bug 2454032 - CVE-2026-25833 micropython: buffer underflow in x509_inet_pton_ipv6() [fedora-all]
Summary: CVE-2026-25833 micropython: buffer underflow in x509_inet_pton_ipv6() [fedora...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: micropython
Version: rawhide
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
Assignee: Charalampos Stratakis
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["8c575d6f-2b5f-4055-93af-b...
Depends On:
Blocks: CVE-2026-25833
TreeView+ depends on / blocked
 
Reported: 2026-04-01 20:22 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-04-25 01:42 UTC (History)
3 users (show)

Fixed In Version: micropython-1.28.0-1.fc45 micropython-1.28.0-1.fc43 micropython-1.28.0-1.fc44
Clone Of:
Environment:
Last Closed: 2026-04-11 20:57:18 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2026-04-01 20:22:50 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.

Comment 1 Charalampos Stratakis 2026-04-11 04:52:36 UTC
The impact here for micropython is DOS only not RCE as it requires to use a literal IPv6 as the hostname during cert verification.

Comment 2 Fedora Update System 2026-04-11 20:52:31 UTC
FEDORA-2026-d619d8d077 (micropython-1.28.0-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d619d8d077

Comment 3 Fedora Update System 2026-04-11 20:56:52 UTC
FEDORA-2026-52a9a687f0 (micropython-1.28.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-52a9a687f0

Comment 4 Fedora Update System 2026-04-11 20:57:18 UTC
FEDORA-2026-d619d8d077 (micropython-1.28.0-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Fedora Update System 2026-04-11 20:57:51 UTC
FEDORA-2026-29f4f47ade (micropython-1.28.0-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-29f4f47ade

Comment 6 Fedora Update System 2026-04-13 01:42:39 UTC
FEDORA-2026-52a9a687f0 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-52a9a687f0`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-52a9a687f0

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

Comment 7 Fedora Update System 2026-04-13 02:05:54 UTC
FEDORA-2026-29f4f47ade has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-29f4f47ade`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-29f4f47ade

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

Comment 8 Fedora Update System 2026-04-16 00:55:23 UTC
FEDORA-2026-29f4f47ade (micropython-1.28.0-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-04-25 01:42:57 UTC
FEDORA-2026-52a9a687f0 (micropython-1.28.0-1.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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