Read the docs
TI-2025-18645 Aliases CVE-2025-24965

.krun_config.json symlink attack creates or overwrites file on the host in crun

Priority HIGH 72CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

crun is an open source OCI Container Runtime fully written in C. In affected versions A malicious container image could trick the krun handler into escaping the root filesystem, allowing file creation or modification on the host. No special permissions are needed, only the ability for the current user to write to the target file. The problem is fixed in crun 1.20 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00577 47th percentileScored 2026-11-07
Fix Partial crun (containers): 1.20Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
containerscrunbefore 1.201.20Patch availableCNA
  • crun Vendorcontainers Affected before 1.20 Fixed in 1.20 Patch available CNA

Remediation

  • Fix · CNA crun (containers) Fixed in 1.20

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 4AffectedNo fix planned: Will not fix
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-24965

References

Other 3

  • TI-2026-23721 Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation CVSS 3.1HIGH 7.8
  • TI-2026-37901 fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC) CVSS 4.0LOW 2.0
  • TI-2026-29788 bubblewrap vulnerable to privilege escalation in setuid mode via ptrace CVSS 4.0HIGH 8.7
  • TI-2024-07805 Containers/aardvark-dns: tcp query handling flaw in aardvark-dns leading to denial of service CVSS 3.1HIGH 7.5
  • TI-2024-08665 Podman: buildah: cri-o: fips crypto-policy directory mounting issue in containers/common go library CVSS 3.1HIGH 8.2
  • TI-2020-04347 Privilege escalation in setuid mode via user namespaces in Bubblewrap CVSS 3.1HIGH 7.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences