Upstream information

CVE-2026-28364 at MITRE

Description

In OCaml before 4.14.3 and 5.x before 5.4.1, a buffer over-read in Marshal deserialization (runtime/intern.c) enables remote code execution through a multi-phase attack chain. The vulnerability stems from missing bounds validation in the readblock() function, which performs unbounded memcpy() operations using attacker-controlled lengths from crafted Marshal data.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (MITRE) National Vulnerability Database SUSE
Base Score 7.9 7.8 7.8
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local Local Local
Attack Complexity Low Low Low
Privileges Required None Low Low
User Interaction None None None
Scope Changed Unchanged Unchanged
Confidentiality Impact High High High
Integrity Impact Low High High
Availability Impact None High High
CVSSv3 Version 3.1 3.1 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 7.7
Vector CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity High
Attack Requirements None
Privileges Required Low
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1258992 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise High Performance Computing 15 SP7
SUSE Linux Enterprise Module for Development Tools 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • ocaml >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs-devel >= 4.14.2-150600.3.3.1
  • ocaml-ocamldoc >= 4.14.2-150600.3.3.1
  • ocaml-runtime >= 4.14.2-150600.3.3.1
 Patchnames:
SUSE-SLE-Module-Development-Tools-15-SP7-2026-830
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-800
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-800
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-800
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-800
SUSE Linux Enterprise Server 15 SP4-LTSS
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-800
SUSE Linux Enterprise Server 15 SP5-LTSS
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-800
SUSE Linux Enterprise Server 15 SP6-LTSS
  • ocaml >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs-devel >= 4.14.2-150600.3.3.1
  • ocaml-ocamldoc >= 4.14.2-150600.3.3.1
  • ocaml-runtime >= 4.14.2-150600.3.3.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-830
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-800
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • ocaml >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs >= 4.05.0-150200.15.3.1
  • ocaml-compiler-libs-devel >= 4.05.0-150200.15.3.1
  • ocaml-ocamldoc >= 4.05.0-150200.15.3.1
  • ocaml-runtime >= 4.05.0-150200.15.3.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-800
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • ocaml >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs-devel >= 4.14.2-150600.3.3.1
  • ocaml-ocamldoc >= 4.14.2-150600.3.3.1
  • ocaml-runtime >= 4.14.2-150600.3.3.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-830
openSUSE Leap 15.6
  • ocaml >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs >= 4.14.2-150600.3.3.1
  • ocaml-compiler-libs-devel >= 4.14.2-150600.3.3.1
  • ocaml-ocamldoc >= 4.14.2-150600.3.3.1
  • ocaml-runtime >= 4.14.2-150600.3.3.1
  • ocaml-source >= 4.14.2-150600.3.3.1
 Patchnames:
openSUSE-SLE-15.6-2026-830
openSUSE Leap 16.0
  • ocaml >= 4.14.2-160000.4.1
  • ocaml-compiler-libs >= 4.14.2-160000.4.1
  • ocaml-compiler-libs-devel >= 4.14.2-160000.4.1
  • ocaml-ocamldoc >= 4.14.2-160000.4.1
  • ocaml-runtime >= 4.14.2-160000.4.1
  • ocaml-source >= 4.14.2-160000.4.1
 Patchnames:
openSUSE-Leap-16.0-391

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 ocaml Released
SUSE Linux Enterprise High Performance Computing 15 SP7 ocaml Released
SUSE Linux Enterprise Module for Development Tools 15 SP7 ocaml Released
SUSE Linux Enterprise Server 15 SP7 ocaml Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 ocaml Released
openSUSE Leap 15.6 ocaml Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS ocaml Released
SUSE Linux Enterprise High Performance Computing 15 SP5 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS ocaml Released
SUSE Linux Enterprise Module for Development Tools 15 SP4 ocaml Affected
SUSE Linux Enterprise Module for Development Tools 15 SP5 ocaml Affected
SUSE Linux Enterprise Server 15 SP4 ocaml Affected
SUSE Linux Enterprise Server 15 SP4-LTSS ocaml Released
SUSE Linux Enterprise Server 15 SP5 ocaml Affected
SUSE Linux Enterprise Server 15 SP5-LTSS ocaml Released
SUSE Linux Enterprise Server 15 SP6-LTSS ocaml Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 ocaml Released
SUSE Manager Proxy 4.3 ocaml Affected
SUSE Manager Retail Branch Server 4.3 ocaml Affected
SUSE Manager Server 4.3 ocaml Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 ocaml Affected
SUSE Enterprise Storage 6 ocaml Affected
SUSE Enterprise Storage 7 ocaml Affected
SUSE Enterprise Storage 7.1 ocaml Affected
SUSE Linux Enterprise Desktop 15 ocaml Affected
SUSE Linux Enterprise Desktop 15 SP1 ocaml Affected
SUSE Linux Enterprise Desktop 15 SP2 ocaml Affected
SUSE Linux Enterprise Desktop 15 SP3 ocaml Affected
SUSE Linux Enterprise Desktop 15 SP4 ocaml Affected
SUSE Linux Enterprise Desktop 15 SP5 ocaml Affected
SUSE Linux Enterprise Desktop 15 SP6 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS ocaml Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS ocaml Released
SUSE Linux Enterprise High Performance Computing 15 SP6 ocaml Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS ocaml Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS ocaml Affected
SUSE Linux Enterprise Module for Development Tools 15 ocaml Affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 ocaml Affected
SUSE Linux Enterprise Module for Development Tools 15 SP2 ocaml Affected
SUSE Linux Enterprise Module for Development Tools 15 SP3 ocaml Affected
SUSE Linux Enterprise Module for Development Tools 15 SP6 ocaml Affected
SUSE Linux Enterprise Real Time 15 SP2 ocaml Affected
SUSE Linux Enterprise Real Time 15 SP3 ocaml Affected
SUSE Linux Enterprise Real Time 15 SP4 ocaml Affected
SUSE Linux Enterprise Server 15 ocaml Affected
SUSE Linux Enterprise Server 15 SP1 ocaml Affected
SUSE Linux Enterprise Server 15 SP1-BCL ocaml Affected
SUSE Linux Enterprise Server 15 SP1-LTSS ocaml Affected
SUSE Linux Enterprise Server 15 SP2 ocaml Affected
SUSE Linux Enterprise Server 15 SP2-BCL ocaml Affected
SUSE Linux Enterprise Server 15 SP2-LTSS ocaml Affected
SUSE Linux Enterprise Server 15 SP3 ocaml Affected
SUSE Linux Enterprise Server 15 SP3-BCL ocaml Affected
SUSE Linux Enterprise Server 15 SP3-LTSS ocaml Affected
SUSE Linux Enterprise Server 15 SP6 ocaml Affected
SUSE Linux Enterprise Server 15-LTSS ocaml Affected
SUSE Linux Enterprise Server for SAP Applications 15 ocaml Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 ocaml Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 ocaml Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 ocaml Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 ocaml Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 ocaml Released
SUSE Manager Proxy 4.0 ocaml Affected
SUSE Manager Proxy 4.1 ocaml Affected
SUSE Manager Proxy 4.2 ocaml Affected
SUSE Manager Retail Branch Server 4.0 ocaml Affected
SUSE Manager Retail Branch Server 4.1 ocaml Affected
SUSE Manager Retail Branch Server 4.2 ocaml Affected
SUSE Manager Server 4.0 ocaml Affected
SUSE Manager Server 4.1 ocaml Affected
SUSE Manager Server 4.2 ocaml Affected
openSUSE Leap 15.3 ocaml Affected
openSUSE Leap 15.4 ocaml Affected
openSUSE Leap 15.5 ocaml Affected

SUSE Timeline for this CVE

CVE page created: Fri Feb 27 06:02:41 2026
CVE page last modified: Thu Mar 19 01:48:33 2026