CVE-2026-88265
mediumA flaw was found in crun.
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.
CVSS
5.6
5.6 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-09-10 09:17
Modified: 2026-10-02 14:17
NVD status: Awaiting Analysis
Last synced 2 days ago
Verified against the source API 2026-10-27 06:52 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:71668 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-88265 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2531224 secalert@redhat.com
- https://github.com/containers/crun/ secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗