SUSE-SU-2026:21404-1: important: Security update for bouncycastle

SLE-UPDATES null at suse.de
Thu Apr 30 20:30:57 UTC 2026 


# Security update for bouncycastle

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

  * bsc#1262225
  * bsc#1262226
  * bsc#1262227
  * bsc#1262228
  * bsc#1262232

  
Cross-References:

  * 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
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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:N/AU:Y/R:A/V:X/RE:M/U:Amber
  * CVE-2026-3505 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-3505 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3505 ( NVD ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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:X/U:X
  * CVE-2026-5588 ( 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-2026-5588 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-5588 ( NVD ):  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/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:X/U:Amber
  * CVE-2026-5598 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-5598 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
  * CVE-2026-5598 ( NVD ):  8.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/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:P/AU:Y/R:X/V:X/RE:X/U:Red

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves five vulnerabilities can now be installed.

## Description:

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:

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-643=1

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-643=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    * bouncycastle-util-1.84-160000.1.1
    * bouncycastle-pkix-1.84-160000.1.1
    * bouncycastle-jmail-1.84-160000.1.1
    * bouncycastle-pg-1.84-160000.1.1
    * bouncycastle-tls-1.84-160000.1.1
    * bouncycastle-mail-1.84-160000.1.1
    * bouncycastle-javadoc-1.84-160000.1.1
    * bouncycastle-1.84-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (noarch)
    * bouncycastle-util-1.84-160000.1.1
    * bouncycastle-pkix-1.84-160000.1.1
    * bouncycastle-jmail-1.84-160000.1.1
    * bouncycastle-pg-1.84-160000.1.1
    * bouncycastle-tls-1.84-160000.1.1
    * bouncycastle-mail-1.84-160000.1.1
    * bouncycastle-javadoc-1.84-160000.1.1
    * bouncycastle-1.84-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-14813.html
  * https://www.suse.com/security/cve/CVE-2026-0636.html
  * https://www.suse.com/security/cve/CVE-2026-3505.html
  * https://www.suse.com/security/cve/CVE-2026-5588.html
  * https://www.suse.com/security/cve/CVE-2026-5598.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1262225
  * https://bugzilla.suse.com/show_bug.cgi?id=1262226
  * https://bugzilla.suse.com/show_bug.cgi?id=1262227
  * https://bugzilla.suse.com/show_bug.cgi?id=1262228
  * https://bugzilla.suse.com/show_bug.cgi?id=1262232

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