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SUSE opensc Important Buffer Overflow and Memory Issues 2026-2657-1

suse
Calendar Grey June 26, 2026
Dist Suse Esm H88
An important SUSE security update for OpenSC addresses severe issues including buffer overflows and memory corruption.
An update that solves six vulnerabilities can now be installed.

Summary

## This update for opensc fixes the following issues * CVE-2025-49010: stack-buffer-overflow via crafted smart card or USB device responses (bsc#1261214). * CVE-2025-66037: crafted input can cause an out-of-bounds read (bsc#1261218). * CVE-2025-66038: improper compact-TLV length validation can lead to crash or unexpected behavior (bsc#1261219). * CVE-2025-66215: crafted smart card or USB device can cause a stack-buffer- overflow write (bsc#1261220). * CVE-2026-10275: global buffer overflow during key pair generation tests due to missing input validation (bsc#1267246). * CVE-2026-40528: stack and heap buffer overrun in the `do_key_value()` function due to missing length check allows for memory corruption via a crafted profile configuration file (bsc#1266963). ## Patch Instructions:

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE memory corruption important opensc

References

* bsc#1261214

* bsc#1261218

* bsc#1261219

* bsc#1261220

* bsc#1266963

* bsc#1267246

Cross-

* CVE-2025-49010

* CVE-2025-66037

* CVE-2025-66038

* CVE-2025-66215

* CVE-2026-10275

* CVE-2026-40528

CVSS scores:

* CVE-2025-49010 ( SUSE ): 1.0

CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

* CVE-2025-49010 ( SUSE ): 3.8 CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

* CVE-2025-49010 ( NVD ): 3.8 CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

* CVE-2025-49010 ( NVD ): 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-66037 ( SUSE ): 1.0

CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

* CVE-2025-66037 ( SUSE ): 3.9 CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

* CVE-2025-66037 ( NVD ): 3.9 CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2657-1
Release Date: 2026-06-26T12:25:12Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE memory corruption important opensc

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