CVE-2026-88265

Published: Sep 10, 2026Modified: Oct 2, 2026

5.6

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N

Exploitability: 1.1 / Impact: 4.0

Source: secalert@redhat.com (Secondary)

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.

Related CWEs

CWE-59

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (4)

https://access.redhat.com/errata/RHSA-2026:71668

Source: secalert@redhat.com

https://access.redhat.com/security/cve/CVE-2026-88265

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2531224

Source: secalert@redhat.com

https://github.com/containers/crun/

Source: secalert@redhat.com

Timeline

No history available yet.