CVE-2025-31133

HIGH

7.8

CVSS v3

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.

CWE-61 CWE-363

How to fix

Remediation Available

runcDebian

Fixed in:1.3.3+ds1-2CVE-2025-31133

aardvark-dns-2:1.0.1Rocky

Fixed in:40.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

Fixed in:40.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

Fixed in:40.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

Fixed in:40.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

aardvark-dns-2:1.0.1Red Hat / RHEL

Fixed in:40.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

Fixed in:40.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

Fixed in:40.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

Fixed in:40.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

aardvark-dns-2:1.10.1Rocky

Fixed in:2.module+el8.10.0+23647+cfd78660.src::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.s390x::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.x86_64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.ppc64le::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.aarch64::container-tools:rhel8RHSA-2025:21232

aardvark-dns-2:1.10.1Red Hat / RHEL

Fixed in:2.module+el8.10.0+23647+cfd78660.src::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.x86_64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.s390x::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.ppc64le::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.aarch64::container-tools:rhel8RHSA-2025:21232

aardvark-dns-2:1.5.0Rocky

Fixed in:2.module+el8.8.0+23884+2031fc78.ppc64le::container-tools:rhel8RHSA-2026:4693

Fixed in:2.module+el8.8.0+23884+2031fc78.x86_64::container-tools:rhel8RHSA-2026:4693

Fixed in:2.module+el8.8.0+23884+2031fc78.src::container-tools:rhel8RHSA-2026:4693

aardvark-dns-2:1.5.0Red Hat / RHEL

Fixed in:2.module+el8.8.0+23884+2031fc78.ppc64le::container-tools:rhel8RHSA-2026:4693

Fixed in:2.module+el8.8.0+23884+2031fc78.src::container-tools:rhel8RHSA-2026:4693

Fixed in:2.module+el8.8.0+23884+2031fc78.x86_64::container-tools:rhel8RHSA-2026:4693

bpftoolRocky

Fixed in:0:4.18.0-372.175.1.el8_6RHSA-2026:0315

Fixed in:0:7.3.0-427.105.1.el9_4RHSA-2026:0331

Fixed in:0:7.0.0-284.153.1.el9_2RHSA-2026:0676

Fixed in:0:7.3.0-427.105.1.el9_4RHSA-2026:0331

bpftoolRed Hat / RHEL

Fixed in:0:4.18.0-372.175.1.el8_6RHSA-2026:0315

Fixed in:0:7.3.0-427.105.1.el9_4RHSA-2026:0331

Fixed in:0:7.0.0-284.154.1.el9_2RHSA-2026:0995

Fixed in:0:7.3.0-427.107.1.el9_4RHSA-2026:0701

bpftool-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-372.175.1.el8_6RHSA-2026:0315

Fixed in:0:7.0.0-284.155.1.el9_2RHSA-2026:1540

Fixed in:0:7.0.0-284.153.1.el9_2RHSA-2026:0676

Fixed in:0:7.0.0-284.147.1.el9_2RHSA-2025:21328

Fixed in:0:7.3.0-427.105.1.el9_4RHSA-2026:0331

bpftool-debuginfoRocky

Fixed in:0:4.18.0-372.175.1.el8_6RHSA-2026:0315

Fixed in:0:7.0.0-284.147.1.el9_2RHSA-2025:21328

Fixed in:0:7.0.0-284.155.1.el9_2RHSA-2026:1540

Fixed in:0:7.0.0-284.154.1.el9_2RHSA-2026:0995

Fixed in:0:7.3.0-427.105.1.el9_4RHSA-2026:0331

buildahRocky

Fixed in:1:1.26.9-1.el9_0.3RHSA-2026:8325

buildahRed Hat / RHEL

Fixed in:1:1.26.9-1.el9_0.3RHSA-2026:8325

buildah-1:1.26.10Rocky

Fixed in:1.module+el8.6.0+24209+25a14987.src::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

buildah-1:1.26.10Red Hat / RHEL

Fixed in:1.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.src::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

buildah-1:1.29.7Red Hat / RHEL

Fixed in:1.module+el8.8.0+24026+ca15dd94.ppc64le::container-tools:rhel8RHSA-2026:4693

Fixed in:1.module+el8.8.0+24026+ca15dd94.x86_64::container-tools:rhel8RHSA-2026:4693

Fixed in:1.module+el8.8.0+24026+ca15dd94.src::container-tools:rhel8RHSA-2026:4693

buildah-1:1.29.7Rocky

Fixed in:1.module+el8.8.0+24026+ca15dd94.x86_64::container-tools:rhel8RHSA-2026:4693

Fixed in:1.module+el8.8.0+24026+ca15dd94.src::container-tools:rhel8RHSA-2026:4693

Fixed in:1.module+el8.8.0+24026+ca15dd94.ppc64le::container-tools:rhel8RHSA-2026:4693

buildah-2:1.33.12Red Hat / RHEL

Fixed in:2.module+el8.10.0+23647+cfd78660.x86_64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.s390x::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.src::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.aarch64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.ppc64le::container-tools:rhel8RHSA-2025:21232

buildah-2:1.33.12Rocky

Fixed in:2.module+el8.10.0+23647+cfd78660.src::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.ppc64le::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.s390x::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.aarch64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.x86_64::container-tools:rhel8RHSA-2025:21232

buildah-debuginfoRocky

Fixed in:1:1.26.9-1.el9_0.3RHSA-2026:8325

buildah-debuginfoRed Hat / RHEL

Fixed in:1:1.26.9-1.el9_0.3RHSA-2026:8325

buildah-debuginfo-1:1.26.10Red Hat / RHEL

Fixed in:1.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

buildah-debuginfo-1:1.26.10Rocky

Fixed in:1.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

buildah-debuginfo-1:1.29.7Rocky

Fixed in:1.module+el8.8.0+24026+ca15dd94.x86_64::container-tools:rhel8RHSA-2026:4693

Fixed in:1.module+el8.8.0+24026+ca15dd94.ppc64le::container-tools:rhel8RHSA-2026:4693

buildah-debuginfo-1:1.29.7Red Hat / RHEL

Fixed in:1.module+el8.8.0+24026+ca15dd94.ppc64le::container-tools:rhel8RHSA-2026:4693

Fixed in:1.module+el8.8.0+24026+ca15dd94.x86_64::container-tools:rhel8RHSA-2026:4693

buildah-debuginfo-2:1.33.12Rocky

Fixed in:2.module+el8.10.0+23647+cfd78660.x86_64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.s390x::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.aarch64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.ppc64le::container-tools:rhel8RHSA-2025:21232

buildah-debuginfo-2:1.33.12Red Hat / RHEL

Fixed in:2.module+el8.10.0+23647+cfd78660.ppc64le::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.x86_64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.aarch64::container-tools:rhel8RHSA-2025:21232

Fixed in:2.module+el8.10.0+23647+cfd78660.s390x::container-tools:rhel8RHSA-2025:21232

buildah-debugsourceRocky

Fixed in:1:1.26.9-1.el9_0.3RHSA-2026:8325

buildah-debugsourceRed Hat / RHEL

Fixed in:1:1.26.9-1.el9_0.3RHSA-2026:8325

buildah-debugsource-1:1.26.10Red Hat / RHEL

Fixed in:1.module+el8.6.0+24209+25a14987.aarch64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.s390x::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:10703

Fixed in:1.module+el8.6.0+24209+25a14987.ppc64le::container-tools:rhel8RHSA-2026:10703

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

0.84%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Patch5

Related Vulnerabilities

Other CWE-61 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-28189	Critical	10.0	7.2%	-	-
CVE-2024-28185	Critical	10.0	7.1%	-	-
CVE-2019-11249	Medium	6.5	3.7%	-	Fix
CVE-2019-11246	Medium	6.5	3.6%	-	Fix
CVE-2019-16775	High	7.7	3.3%	-	Fix
CVE-2019-11251	Medium	4.8	2.6%	-	Fix

Common questions

How do I fix CVE-2025-31133?

Published advisories record a fix for 311 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2025-31133 being actively exploited?

Not that we know of. CVE-2025-31133 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.84% is the estimated probability that it will be exploited in the next 30 days. That is higher than 55% of all scored CVEs.

How severe is CVE-2025-31133?

CVE-2025-31133 has a CVSS v3 base score of 7.8, rated important. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-31133 affect?

Published advisories record a fix for runc (Debian), aardvark-dns-2:1.0.1 (Rocky), aardvark-dns-2:1.0.1 (Red Hat / RHEL), aardvark-dns-2:1.10.1 (Rocky), and 307 more. The list on this page is capped, so there may be more.

Embed a live status badge for CVE-2025-31133

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-03.