Bug 2452158

Summary: CVE-2026-33416 mingw-libpng: libpng: Arbitrary code execution due to use-after-free vulnerability [fedora-43]
Product: [Fedora] Fedora Reporter: Vipul Nair <vinair>
Component: mingw-libpngAssignee: Richard W.M. Jones <rjones>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: 43CC: manisandro, rjones
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["47c6ec22-7f7b-4729-9e00-fbdcf881a1f1"]}
Fixed In Version: mingw-libpng-1.6.56-1.fc43 mingw-libpng-1.6.56-1.fc42 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-05 00:52:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2451805    

Description Vipul Nair 2026-03-27 07:46:09 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 2026-03-27 16:27:23 UTC
FEDORA-2026-7576b56379 (mingw-libpng-1.6.56-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-7576b56379

Comment 2 Fedora Update System 2026-03-27 16:27:33 UTC
FEDORA-2026-f911c124c2 (mingw-libpng-1.6.56-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f911c124c2

Comment 3 Fedora Update System 2026-03-27 16:27:42 UTC
FEDORA-2026-c33aec93da (mingw-libpng-1.6.56-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c33aec93da

Comment 4 Fedora Update System 2026-03-28 01:33:20 UTC
FEDORA-2026-c33aec93da 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-c33aec93da`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c33aec93da

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

Comment 5 Fedora Update System 2026-03-28 01:48:22 UTC
FEDORA-2026-7576b56379 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-2026-7576b56379`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7576b56379

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

Comment 6 Fedora Update System 2026-03-28 02:17:13 UTC
FEDORA-2026-f911c124c2 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-f911c124c2`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f911c124c2

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

Comment 7 Fedora Update System 2026-04-05 00:52:48 UTC
FEDORA-2026-7576b56379 (mingw-libpng-1.6.56-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-04-05 00:58:53 UTC
FEDORA-2026-f911c124c2 (mingw-libpng-1.6.56-1.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.