SUSE-SU-2026:2337-1: important: Security update for libyang

[SLE-SECURITY-UPDATES]

# Security update for libyang

Announcement ID: SUSE-SU-2026:2337-1  
Release Date: 2026-06-10T08:43:48Z  
Rating: important  
References:

  * bsc#1265330
  * bsc#1266316

  
Cross-References:

  * CVE-2026-41401
  * CVE-2026-44673

  
CVSS scores:

  * CVE-2026-41401 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-41401 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-41401 ( NVD ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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-2026-41401 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-44673 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-44673 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-44673 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for libyang fixes the following issues

  * CVE-2026-41401: use-after-free in `lyd_parser_set_data_flags` when
    processing crafted YANG XML documents with specific metadata attributes
    (bsc#1266316).
  * CVE-2026-44673: integer overflow in `lyb_read_string()` of
    `src/parser_lyb.c` leads to heap buffer overflow when parsing a maliciously
    crafted LYB binary blob (bsc#1265330).

## 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:

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2337=1

## Package List:

  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * libyang-debugsource-2.1.148-150700.3.5.1
    * libyang-debuginfo-2.1.148-150700.3.5.1
    * libyang2-debuginfo-2.1.148-150700.3.5.1
    * libyang2-2.1.148-150700.3.5.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-41401.html
  * https://www.suse.com/security/cve/CVE-2026-44673.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1265330
  * https://bugzilla.suse.com/show_bug.cgi?id=1266316

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.suse.com/pipermail/sle-security-updates/attachments/20260610/8d7e369e/attachment.htm>