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Fencer Vulns
high 8.5

CVE-2025-24965 json

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

published 2025-02-19 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-5092

cvss
8.5
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

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.

Patch / fix

  • crun_project crun 1.20
  • crun Linux Micro 6.0 1.14-2.1

suse advisories SUSE-SU-2026:20452-1

  • crun Package Hub 15 SP6, openSUSE Leap 15.6 1.20-bp156.2.3.1
  • crun openSUSE Tumbleweed 1.20-1.1

opensuse advisories openSUSE-SU-2025:0074-1openSUSE-SU-2025:14763-1

  • crun Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 1.20-r0

alpine advisories ALPINE-CVE-2025-24965

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-24965 updated cvss 8.7

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

  • Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 crun Red Hat Enterprise Linux 9 crun Red Hat Enterprise Linux 10 crun Red Hat OpenShift Container Platform 4 crun
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.5 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CNA 4.0 8.5 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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

Affected products

  • containers crun

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.