DEBIAN-CVE-2026-28364

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-28364
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28364.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-28364
Upstream
Published
2026-02-27T04:16:03.410Z
Modified
2026-03-07T11:01:19.181309Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / ocaml

Package

Name
ocaml
Purl
pkg:deb/debian/ocaml?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.11.1-4
4.11.1-5
4.13.1-1
4.13.1-2
4.13.1-3
4.13.1-4
4.13.1-5~exp1
4.13.1-5
4.13.1-6
4.14.1-1~exp1
4.14.1-1
4.14.1-1+loong64.2
5.*
5.2.0-1~exp1
5.2.0-1~exp2
5.2.0-1~exp3
5.2.0-1~exp4
5.2.0-1
5.2.0-2
5.2.0-3
5.2.0-3+hurd.1
5.2.0-3+hurd.2
5.3.0-1~exp1
5.3.0-1~exp2
5.3.0-1
5.3.0-1+hurd.1
5.3.0-2
5.3.0-3
5.4.0-1~exp1
5.4.0-1~exp2
5.4.0-1~exp3
5.4.0-1
5.4.0-2
5.4.0-3
5.4.1-1~exp1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28364.json"

Debian:12 / ocaml

Package

Name
ocaml
Purl
pkg:deb/debian/ocaml?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.13.1-4
4.13.1-5~exp1
4.13.1-5
4.13.1-6
4.14.1-1~exp1
4.14.1-1
4.14.1-1+loong64.2
5.*
5.2.0-1~exp1
5.2.0-1~exp2
5.2.0-1~exp3
5.2.0-1~exp4
5.2.0-1
5.2.0-2
5.2.0-3
5.2.0-3+hurd.1
5.2.0-3+hurd.2
5.3.0-1~exp1
5.3.0-1~exp2
5.3.0-1
5.3.0-1+hurd.1
5.3.0-2
5.3.0-3
5.4.0-1~exp1
5.4.0-1~exp2
5.4.0-1~exp3
5.4.0-1
5.4.0-2
5.4.0-3
5.4.1-1~exp1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28364.json"

Debian:13 / ocaml

Package

Name
ocaml
Purl
pkg:deb/debian/ocaml?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.3.0-3
5.4.0-1~exp1
5.4.0-1~exp2
5.4.0-1~exp3
5.4.0-1
5.4.0-2
5.4.0-3
5.4.1-1~exp1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28364.json"

Debian:14 / ocaml

Package

Name
ocaml
Purl
pkg:deb/debian/ocaml?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.3.0-3
5.4.0-1~exp1
5.4.0-1~exp2
5.4.0-1~exp3
5.4.0-1
5.4.0-2
5.4.0-3
5.4.1-1~exp1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28364.json"