SUSE-SU-2026:3921-1: moderate: Security update for libgcrypt

[SLE-UPDATES]

# Security update for libgcrypt

Announcement ID: SUSE-SU-2026:3921-1  
Release Date: 2026-09-02T07:32:30Z  
Rating: moderate  
References:

  * bsc#1262684

  
Cross-References:

  * CVE-2026-41989

  
CVSS scores:

  * CVE-2026-41989 ( SUSE ):  5.8
    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-41989 ( SUSE ):  6.3 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
  * CVE-2026-41989 ( NVD ):  6.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for libgcrypt fixes the following issue:

  * CVE-2026-41989: crafted ECDH ciphertext can lead denial of service
    (bsc#1262684).

## 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 Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3921=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3921=1

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2026-3921=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-3921=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-3921=1

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
    * libgcrypt20-hmac-1.9.4-150400.6.14.1
    * libgcrypt20-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-debugsource-1.9.4-150400.6.14.1
    * libgcrypt20-1.9.4-150400.6.14.1
  * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
    * libgcrypt20-hmac-1.9.4-150400.6.14.1
    * libgcrypt20-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-debugsource-1.9.4-150400.6.14.1
    * libgcrypt20-1.9.4-150400.6.14.1
  * openSUSE Leap 15.4 (x86_64)
    * libgcrypt20-32bit-1.9.4-150400.6.14.1
    * libgcrypt20-hmac-32bit-1.9.4-150400.6.14.1
    * libgcrypt-devel-32bit-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt20-32bit-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-devel-32bit-1.9.4-150400.6.14.1
  * openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)
    * libgcrypt-debugsource-1.9.4-150400.6.14.1
    * libgcrypt20-hmac-1.9.4-150400.6.14.1
    * libgcrypt-cavs-1.9.4-150400.6.14.1
    * libgcrypt-cavs-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-devel-1.9.4-150400.6.14.1
    * libgcrypt20-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-devel-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt20-1.9.4-150400.6.14.1
  * openSUSE Leap 15.4 (aarch64_ilp32)
    * libgcrypt-devel-64bit-1.9.4-150400.6.14.1
    * libgcrypt-devel-64bit-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt20-hmac-64bit-1.9.4-150400.6.14.1
    * libgcrypt20-64bit-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt20-64bit-1.9.4-150400.6.14.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
    * libgcrypt20-hmac-1.9.4-150400.6.14.1
    * libgcrypt20-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-debugsource-1.9.4-150400.6.14.1
    * libgcrypt20-1.9.4-150400.6.14.1
  * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
    * libgcrypt20-hmac-1.9.4-150400.6.14.1
    * libgcrypt20-debuginfo-1.9.4-150400.6.14.1
    * libgcrypt-debugsource-1.9.4-150400.6.14.1
    * libgcrypt20-1.9.4-150400.6.14.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-41989.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1262684

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