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6.8
OpenSC can crash when Muscle Card sends bad data
published 4 days ago
Summary
The OpenSC software that allows computers to communicate with smart cards can be confused by a Muscle card that sends data larger than expected. This can cause the program to stop working or let an attacker take control. Install the latest OpenSC update or avoid using Muscle cards until the fix is applied.
What to do
- Update cleanstart opensc to version 0.19.0-r0.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| CleanStart | cleanstart | opensc |
< 0.19.0-r0 Fix: upgrade to 0.19.0-r0
|
Original advisory text
Several buffer overflows when handling responses from a Muscle Card in muscle_list_files in libopensc/card-muscle
Security vulnerability affects the opensc package. Several buffer overflows when handling responses from a Muscle Card in muscle_list_files in libopensc/card-muscle.
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker full control (estimated)
Timeline
Published31 Oct 2026
Updated31 Oct 2026
First seen31 Oct 2026
Sources
CLEANSTART-2024-AZ75759 · OSV
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