> CVE-2025-31133 [HIGH]

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PUBLISHED
2025-11-06 19:15
MODIFIED
2025-11-06 19:45
CVSS_SCORE V3
7.3
EPSS (Prob. Exploit)
0.84%
Top 42.4%
DATA SOURCES:
NVD 🔗 2025-11-06 RED HAT 🔗 2025-11-09 CVE PROJECT 🔗 2026-01-19 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-11-04 OSV 🔗 2026-09-13 MSRC 🔗 2026-10-01

> DESCRIPTION

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the source of the bind-mount (i.e., the container's /dev/null) was actually a real /dev/null inode when using the container's /dev/null to mask. This exposes two methods of attack: an arbitrary mount gadget, leading to host information disclosure, host denial of service, container escape, or a bypassing of maskedPaths. This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

> AFFECTED_PRODUCTS

Red Hat - Red Hat Enterprise Linux 9
Version: 1.2.5

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Local (L)
Exploit nécessite un accès local au système
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
Required (R)
Nécessite une action utilisateur (clic lien, ouverture fichier, etc.)
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-61 CWE-363

> CWE DETAILED DESCRIPTIONS

CWE-61: UNIX Symbolic Link (Symlink) Following - The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. | CWE-363: Race Condition Enabling Link Following - The product checks the status of a file or directory before accessing it, which produces a race condition in which the file can be replaced with a link before the access is performed, causing the product to access the wrong file.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: runc security update
An update for runc is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVS...
Red Hat Security Advisory: runc security update
An update for runc is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVS...
Red Hat Security Advisory: container-tools:rhel8 security update
An update for the container-tools:rhel8 module is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulne...
Red Hat Security Advisory: OpenShift Container Platform 4.14.59 packages and security update
Red Hat OpenShift Container Platform release 4.14.59 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.16.53 bug fix and security update
Red Hat OpenShift Container Platform release 4.16.53 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.18.29 bug fix and security update
Red Hat OpenShift Container Platform release 4.18.29 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.13.62 bug fix and security update
Red Hat OpenShift Container Platform release 4.13.62 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.15.60 bug fix and security update
Red Hat OpenShift Container Platform release 4.15.60 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.12.84 packages and security update
Red Hat OpenShift Container Platform release 4.12.84 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.16.55 packages and security update
Red Hat OpenShift Container Platform release 4.16.55 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.18.31 packages and security update
Red Hat OpenShift Container Platform release 4.18.31 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: runc security update
An update for runc is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnera...
Red Hat Security Advisory: OpenShift Container Platform 4.13.63 packages and security update
Red Hat OpenShift Container Platform release 4.13.63 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.17.47 packages and security update
Red Hat OpenShift Container Platform release 4.17.47 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.14.61 packages and security update
Red Hat OpenShift Container Platform release 4.14.61 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.15.61 packages and security update
Red Hat OpenShift Container Platform release 4.15.61 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: Red Hat Quay 3.16.2
Red Hat Quay 3.16.2 is now available with bug fixes.
Red Hat Security Advisory: runc security update
An update for runc is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Comm...
Red Hat Security Advisory: container-tools:rhel8 security update
An update for the container-tools:rhel8 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service....
Red Hat Security Advisory: OpenShift Container Platform 4.12.87 bug fix and security update
Red Hat OpenShift Container Platform release 4.12.87 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: buildah, crun, podman, runc, and skopeo security update
An update for multiple packages is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Impo...
Red Hat Security Advisory: container-tools:rhel8 security update
An update for the container-tools:rhel8 module is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solution...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> GITHUB SECURITY ADVISORY

GHSA-9493-h29p-rfm2 HIGH

runc container escape via "masked path" abuse due to mount race conditions

AFFECTED PACKAGES:
GO / github.com/opencontainers/runc
>= 1.4.0-rc.1, <= 1.4.0-rc.2
Fixed in: 1.4.0-rc.3
GO / github.com/opencontainers/runc
>= 1.3.0-rc.1, <= 1.3.2
Fixed in: 1.3.3
GO / github.com/opencontainers/runc
<= 1.2.7
Fixed in: 1.2.8

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

runc container escape via "masked path" abuse due to mount race conditions

AFFECTED PACKAGES:
Unknown / Unknown
12 versions affected
ALIASES:
GHSA-9493-h29p-rfm2, GO-2025-4096

> HISTORIQUE DES MODIFICATIONS

Première apparition
06/11/2025 19:15
Source: NVD
📊 ENRICHISSEMENT 19/01/2026 17:36
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 01/12/2025 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-61: UNIX Symbolic Link (Symlink) Following - The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of ...
📊 ENRICHISSEMENT 09/11/2025 04:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Important" }
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 06/11/2025 23:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Important" }
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 06/11/2025 22:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Important" }
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 06/11/2025 21:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Important" }
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 06/11/2025 20:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 06/11/2025 20:30
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 8 Dernière mise à jour: 9 months ago

> REFERENCES

https://github.com/opencontainers/runc/commit/1a30a8f3d921acbbb6a4bb7e99da2c05f8...
https://github.com/opencontainers/runc/commit/5d7b2424072449872d1cd0c937f2ca25f4...
https://github.com/opencontainers/runc/commit/8476df83b534a2522b878c0507b3491def...
https://github.com/opencontainers/runc/commit/db19bbed5348847da433faa9d69e9f9019...
https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2
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