Bug 2492656

Summary: blender crashes after materialx update
Product: [Fedora] Fedora Reporter: manodor
Component: blenderAssignee: Ben Beasley <code>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 44CC: code, design-devel, epel-packagers-sig, gang65, luya_tfz, negativo17
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: blender-5.1.2-5.fc44 blender-5.1.2-3.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-06-28 00:58:06 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description manodor 2026-06-25 08:06:03 UTC 
Description of problem:
Blender currently crashes on startup, after updating the materialx package to version 1.39.5 and displays the following:
blender: symbol lookup error: /lib64/libusd_ms.so.0.26.3: undefined symbol: _ZTIN17MaterialX_v1_39_47ElementE

Version-Release number of selected component (if applicable):
5.1.1

How reproducible:
The error was reproducible on all my devices with fedora 44 kde and I could also reproduce it on a fresh installed fedora 44 workspace and kde vm

Steps to Reproduce:
1. Install blender: sudo dnf install blender
2. Start blender in the terminal -> blender: symbol lookup error: /lib64/libusd_ms.so.0.26.3: undefined symbol: _ZTIN17MaterialX_v1_39_47ElementE
3. Downgrade materialx to 1.39.4: sudo dnf install materialx-1.39.4
4. Start blender in the terminal -> works again

Actual results:


Expected results:


Additional info:
the update to materialx was marked as a security fix, so an new blender build that works with materialx-1.39.5 would be nice
Comment 1 Ben Beasley 2026-06-25 08:24:10 UTC 
See https://bugzilla.redhat.com/show_bug.cgi?id=2492227#c4. Blender rebuilds (in side tags with rebuilt usd) are currently in progress for F44 and F43.
Comment 2 Fedora Update System 2026-06-25 09:10:20 UTC 
FEDORA-2026-5f0e71928f (blender-5.1.2-3.fc43 and usd-25.08-21.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5f0e71928f
Comment 3 Ben Beasley 2026-06-25 09:12:32 UTC 
Waiting for https://bodhi.fedoraproject.org/updates/FEDORA-2026-19ee9e9792 to be “unlocked” after F44 composes failed today, so I can unpush it and create a new update that includes Blender.
Comment 4 Fedora Update System 2026-06-26 01:34:31 UTC 
FEDORA-2026-5f0e71928f 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-2026-5f0e71928f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5f0e71928f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 5 Fedora Update System 2026-06-26 05:28:11 UTC 
FEDORA-2026-872aaa784d (blender-5.1.2-5.fc44 and usd-26.03-4.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-872aaa784d
Comment 6 Fedora Update System 2026-06-27 01:57:49 UTC 
FEDORA-2026-872aaa784d 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-2026-872aaa784d`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-872aaa784d

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 7 Fedora Update System 2026-06-28 00:58:06 UTC 
FEDORA-2026-872aaa784d (blender-5.1.2-5.fc44 and usd-26.03-4.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 8 Fedora Update System 2026-07-04 01:06:51 UTC 
FEDORA-2026-5f0e71928f (blender-5.1.2-3.fc43 and usd-25.08-21.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 rogahnjerrod1 2026-10-02 11:31:07 UTC Comment hidden (spam)