Description
OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical access to the computer at the time user or administrator uses a token can cause a stack-buffer-overflow WRITE in card-oberthur. The attack requires crafted USB device or smart card that would present the system with specially crafted responses to the APDUs. This issue has been patched in version 0.27.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenSC | OpenSC | < 0.27.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | opensc | 0.27.0~rc1-1 | — |
| Debian 13 | opensc | No fix yet | — |
| Debian 12 | opensc | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | opensc | No fix yet | — |
| Ubuntu 26.04 LTS | opensc | No fix yet | — |
| Ubuntu 25.10 | opensc | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | opensc | No fix yet | — |
| Ubuntu Pro 22.04 LTS | opensc | No fix yet | — |
| Ubuntu Pro 20.04 LTS | opensc | No fix yet | — |
| Ubuntu Pro 18.04 LTS | opensc | No fix yet | — |
| Ubuntu Pro 16.04 LTS | opensc | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | opensc | 0.22.0-150600.11.11.1 | SUSE-SU-2026:2697-1 |
| SLES 15 SP6 | opensc | 0.22.0-150600.11.11.1 | SUSE-SU-2026:2697-1 |
| SLES 15 SP5 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLES 15 SP4 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLES 12 SP5 | opensc | 0.13.0-3.36.1 | SUSE-SU-2026:2678-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | opensc | 0.26.1-160000.3.1 | SUSE-SU-2026:22126-1 |
| SLES for SAP 15 SP6 | opensc | 0.22.0-150600.11.11.1 | SUSE-SU-2026:2697-1 |
| SLES for SAP 15 SP5 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLES for SAP 15 SP4 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLES 16.0 | opensc | 0.26.1-160000.3.1 | SUSE-SU-2026:22126-1 |
| SLE Micro 6.2 | opensc | 0.26.1-160000.3.1 | SUSE-SU-2026:22114-1 |
| SLE Micro 5.5 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLE Micro 5.4 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLE Micro 5.3 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLE Micro 5.2 | opensc | 0.19.0-150100.3.34.1 | SUSE-SU-2026:1477-1 |
| SLE HPC 15 SP5 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
| SLE HPC 15 SP4 | opensc | 0.22.0-150400.3.17.1 | SUSE-SU-2026:2657-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | opensc | 0.27.1-1.1 | openSUSE-SU-2026:10475-1 |
| openSUSE Leap 16.0 | opensc | 0.26.1-160000.3.1 | openSUSE-SU-2026:20967-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | opensc | 0.27.1-1 | — |
Advisories 9
- SUSE-SU-2026:2697-1 Security update for opensc SUSE / openSUSE Security Updates · Jul 1, 2026
- WID-SEC-2026-0917 OpenSC: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jun 30, 2026
- SUSE-SU-2026:2678-1 Security update for opensc SUSE / openSUSE Security Updates · Jun 30, 2026
- SUSE-SU-2026:2657-1 Security update for opensc SUSE / openSUSE Security Updates · Jun 27, 2026
- openSUSE-SU-2026:20967-1 Security update for opensc SUSE / openSUSE Security Updates · Jun 24, 2026
- SUSE-SU-2026:22126-1 Security update for opensc SUSE / openSUSE Security Updates · Jun 17, 2026
- SUSE-SU-2026:22114-1 Security update for opensc SUSE / openSUSE Security Updates · Jun 17, 2026
- SUSE-SU-2026:1477-1 Security update for opensc SUSE / openSUSE Security Updates · Apr 21, 2026
- openSUSE-SU-2026:10475-1 opensc-0.27.1-1.1 on GA media SUSE / openSUSE Security Updates · Apr 2, 2026