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SUSE 16.0 Bouncycastle Important Security Fix DoS 2026-21404-1

suse
Calendar Grey April 30, 2026
Dist Suse Esm H88
An update addressing multiple security issues in BouncyCastle for SUSE systems, including important patches and installation guidance.
An update that solves five vulnerabilities can now be installed.

Summary

## This update for bouncycastle fixes the following issues: * Update to version 1.84: * CVE-2025-14813: GOSTCTR implementation unable to process more than 255 blocks correctly (bsc#1262225). * CVE-2026-0636: LDAP Injection Vulnerability in LDAPStoreHelper.java (bsc#1262226). * CVE-2026-3505: Unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (bsc#1262232). * CVE-2026-5588: PKIX draft CompositeVerifier accepts empty signature sequence as valid (bsc#1262228). * CVE-2026-5598: Non-constant time comparisons risk private key leakage in FrodoKEM (bsc#1262227). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product:

Topics%20covered

Topics Covered

security advisory SuSE important resource exhaustion ldap injection bouncycastle

References

* bsc#1262225

* bsc#1262226

* bsc#1262227

* bsc#1262228

* bsc#1262232

Cross-

* CVE-2025-14813

* CVE-2026-0636

* CVE-2026-3505

* CVE-2026-5588

* CVE-2026-5598

CVSS scores:

* CVE-2025-14813 ( SUSE ): 8.3

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

* CVE-2025-14813 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

* CVE-2025-14813 ( NVD ): 9.3

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:M/U:Red

* CVE-2026-0636 ( SUSE ): 6.3

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

* CVE-2026-0636 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

* CVE-2026-0636 ( NVD ): 5.5

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21404-1
Release Date: 2026-04-24T15:26:29Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important resource exhaustion ldap injection bouncycastle

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