Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-88265
Red Hat Red Hat Hardened Images — Crun: crun: /dev/null symlink follow during stdio reopen allows host bind-mount write and chown
AV AC PR UI S C I A CVSS EPSS %ile KEV
L H L N C N H N 5.6 .0012 1.6 —
AFFECTED
Product Versions Fixed
Red Hat Hardened Images unspecified 1.30-1.hum1
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Sep 10 Reserved by redhat
Sep 10 Published (CNA: redhat)
Oct 2 PATCH SHIPPED — CVE-2026-88265 (Red Hat Hardened Images). Fixed in Red Hat Hardened Images 1.30-1.hum1.
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 10, 2026 | Reserved | Reserved by redhat |
| September 10, 2026 | Published | Published (CNA: redhat) |
| October 2, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-88265 (Red Hat Hardened Images). Fixed in Red Hat Hardened Images 1.30-1.hum1. |
Affected
Affected products and packages — 7 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Hardened Images | — | — | 1.30-1.hum1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-88265 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
