Bug 2456379 - CVE-2026-39395 singularity-ce: Cosign: Incorrect attestation verification due to malformed payloads or mismatched predicate types [fedora-43]
Summary: CVE-2026-39395 singularity-ce: Cosign: Incorrect attestation verification due...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: singularity-ce
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: David Trudgian
QA Contact:
URL:
Whiteboard: {"flaws": ["1640bd01-a103-426f-be48-7...
Depends On:
Blocks: CVE-2026-39395
TreeView+ depends on / blocked
 
Reported: 2026-04-08 08:56 UTC by Vipul Nair
Modified: 2026-06-19 01:09 UTC (History)
3 users (show)

Fixed In Version: singularity-ce-4.4.2-1.fc43
Clone Of:
Environment:
Last Closed: 2026-06-19 01:09:40 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Vipul Nair 2026-04-08 08:56:08 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 Fedora Update System 2026-06-10 08:50:27 UTC 
FEDORA-2026-5358fb95a0 (singularity-ce-4.4.2-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5358fb95a0
Comment 2 Fedora Update System 2026-06-11 01:30:21 UTC 
FEDORA-2026-5358fb95a0 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-2026-5358fb95a0`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5358fb95a0

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 3 Fedora Update System 2026-06-19 01:09:40 UTC 
FEDORA-2026-5358fb95a0 (singularity-ce-4.4.2-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.
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