A flaw was found in crun where containers were incorrectly started with non-empty default permissions.
A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
- Published
- Apr 4, 2022
- Updated
- Jun 17, 2026
- EPSS
- 1.3% · 68th percentile
- CWE
- CWE-276
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.3%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| crun project | crun | cpe:2.3:a:crun_project:crun |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| redhat | openshift container platform | cpe:2.3:a:redhat:openshift_container_platform |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- crun project crunbefore 1.4.4
- fedoraproject fedora34
- redhat enterprise linux8.0
- redhat openshift container platform4.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
n/a crun
- Affects crun v1.4.3 and prior, Fixed in – v1.4.4affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | aardvark-dns | before 2:1.0.1-27.module_el8.6.0+2878+e681bc44 | 2:1.0.1-27.module_el8.6.0+2878+e681bc44 |
| AlmaLinux:8 | buildah | before 1.19.9-3.module_el8.6.0+2876+9ed4eae2 | 1.19.9-3.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | buildah | before 1:1.24.2-4.module_el8.6.0+2878+e681bc44 | 1:1.24.2-4.module_el8.6.0+2878+e681bc44 |
| AlmaLinux:8 | buildah-tests | before 1:1.24.2-4.module_el8.6.0+2878+e681bc44 | 1:1.24.2-4.module_el8.6.0+2878+e681bc44 |
| AlmaLinux:8 | buildah-tests | before 1.19.9-3.module_el8.6.0+2876+9ed4eae2 | 1.19.9-3.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | cockpit-podman | before 43-1.module_el8.6.0+2877+8e437bf5 | 43-1.module_el8.6.0+2877+8e437bf5 |
| AlmaLinux:8 | cockpit-podman | before 29-2.module_el8.6.0+2876+9ed4eae2 | 29-2.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | conmon | before 2:2.1.0-1.module_el8.6.0+2877+8e437bf5 | 2:2.1.0-1.module_el8.6.0+2877+8e437bf5 |
| AlmaLinux:8 | conmon | before 2:2.0.26-1.module_el8.6.0+2876+9ed4eae2 | 2:2.0.26-1.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | container-selinux | before 2:2.179.1-1.module_el8.6.0+2878+e681bc44 | 2:2.179.1-1.module_el8.6.0+2878+e681bc44 |
| AlmaLinux:8 | container-selinux | before 2:2.178.0-2.module_el8.6.0+2876+9ed4eae2 | 2:2.178.0-2.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | containernetworking-plugins | before 1:1.0.1-2.module_el8.6.0+2878+e681bc44 | 1:1.0.1-2.module_el8.6.0+2878+e681bc44 |
| AlmaLinux:8 | containernetworking-plugins | before 0.9.1-1.module_el8.6.0+2876+9ed4eae2 | 0.9.1-1.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | containers-common | before 1:1.2.4-1.module_el8.6.0+2876+9ed4eae2 | 1:1.2.4-1.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | containers-common | before 2:1-27.module_el8.6.0+2878+e681bc44 | 2:1-27.module_el8.6.0+2878+e681bc44 |
| AlmaLinux:8 | crit | before 3.15-1.module_el8.6.0+2876+9ed4eae2 | 3.15-1.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | crit | before 3.15-3.module_el8.6.0+2751+06427ca3 | 3.15-3.module_el8.6.0+2751+06427ca3 |
| AlmaLinux:8 | crit | before 3.15-3.module_el8.6.0+2877+8e437bf5 | 3.15-3.module_el8.6.0+2877+8e437bf5 |
| AlmaLinux:8 | criu | before 3.15-1.module_el8.6.0+2876+9ed4eae2 | 3.15-1.module_el8.6.0+2876+9ed4eae2 |
| AlmaLinux:8 | criu | before 3.15-3.module_el8.6.0+2877+8e437bf5 | 3.15-3.module_el8.6.0+2877+8e437bf5 |
| AlmaLinux:8 | criu | before 3.15-3.module_el8.6.0+2751+06427ca3 | 3.15-3.module_el8.6.0+2751+06427ca3 |
| AlmaLinux:8 | criu-devel | before 3.15-3.module_el8.6.0+2751+06427ca3 | 3.15-3.module_el8.6.0+2751+06427ca3 |
| AlmaLinux:8 | criu-devel | before 3.15-3.module_el8.6.0+2877+8e437bf5 | 3.15-3.module_el8.6.0+2877+8e437bf5 |
| AlmaLinux:8 | criu-libs | before 3.15-3.module_el8.6.0+2751+06427ca3 | 3.15-3.module_el8.6.0+2751+06427ca3 |
+96
Same product
crun project: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-18837An issue was discovered in crun before 0.10.5.34Monitor
- CVE-2026-30892Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:aardvark-dns | 2:1.0.1-27.module_el8.6.0+2878+e681bc44 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:buildah | 1:1.24.2-4.module_el8.6.0+2878+e681bc44 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:buildah-tests | 1:1.24.2-4.module_el8.6.0+2878+e681bc44 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:cockpit-podman | 43-1.module_el8.6.0+2877+8e437bf5 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:conmon | 2:2.1.0-1.module_el8.6.0+2877+8e437bf5 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:container-selinux | 2:2.179.1-1.module_el8.6.0+2878+e681bc44 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:containernetworking-plugins | 1:1.0.1-2.module_el8.6.0+2878+e681bc44 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:containers-common | 2:1-27.module_el8.6.0+2878+e681bc44 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:crit | 3.15-3.module_el8.6.0+2751+06427ca3 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:criu | 3.15-3.module_el8.6.0+2877+8e437bf5 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:criu-devel | 3.15-3.module_el8.6.0+2751+06427ca3 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:criu-libs | 3.15-3.module_el8.6.0+2751+06427ca3 · AlmaLinux:8 | Package registry (OSV) |
| debian:crun | 1.5+dfsg-1 · Debian:12 | Package registry (OSV) |
| opensuse:crun | 1.4.4-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:aardvark-dns | 2:1.0.1-27.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:buildah | 1:1.24.2-4.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:buildah-debuginfo | 1:1.24.2-4.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:buildah-debugsource | 1:1.24.2-4.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:buildah-tests | 1:1.24.2-4.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:buildah-tests-debuginfo | 1:1.24.2-4.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:cockpit-podman | 0:43-1.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:conmon | 2:2.1.0-1.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:conmon-debuginfo | 2:2.1.0-1.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:conmon-debugsource | 2:2.1.0-1.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:container-selinux | 2:2.179.1-1.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:containernetworking-plugins | 1:1.0.1-2.module+el8.6.0+14673+621cb8be · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:buildah | 1:1.24.2-4.module+el8.6.0+785+d1251653 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:cockpit-podman | 0:43-1.module+el8.6.0+784+32aef5de · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:conmon | 2:2.1.0-1.module+el8.6.0+784+32aef5de · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:container-selinux | 2:2.179.1-1.module+el8.6.0+785+d1251653 · Rocky Linux:8 | Package registry (OSV) |
+8
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-276 · Incorrect Default PermissionsCVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugzilla.redhat.com/show_bug.cgi?id=2066845
- github.com/containers/crun/commit/1aeeed2e4fdeffb4875c0d0b439915894594c8c6
- github.com/containers/crun/security/advisories/GHSA-wr4f-w546-m398
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HYIGABCZ7ZHAG2XCOGITTQRJU2ASWMFA/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.