CVE-2026-88265

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-88265
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88265.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-88265
Downstream
Related
Published
2026-09-10T08:57:03Z
Modified
2026-10-21T03:00:02Z
Severity
  • 5.6 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N CVSS Calculator
Summary
Crun: crun: /dev/null symlink follow during stdio reopen allows host bind-mount write and chown
Details

A flaw was found in crun. After pivot_root, reopening /dev/null for stdio can follow a symlink and attach a host file to container stdio, then change that file's ownership. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.

Database specific 
{
    "cna_assigner":  "redhat",
    "cwe_ids":  [
        "CWE-59"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88265.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "1.30-1.hum1"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "InverseAffectedRanges"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/containers/crun

Affected ranges

Type
GIT
Repo
https://github.com/containers/crun
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
f0d911de5587342cfeb16473bf32ecdfeaf25957
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "last_affected":  "1.29.1"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

0.*
0.10
0.10.1
0.10.2
0.10.3
0.10.4
0.10.5
0.10.6
0.12.1
0.4
0.5
0.6
0.7
0.8
0.9
0.9.1
1.*
1.0
1.27
1.29.1
1.5
v0.*
v0.2
v0.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88265.json"