Upstream information

CVE-2026-47766 at MITRE

Description

crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -> pts/ptmx` symlink. Version 1.28 fixes the issue.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail SUSE
Base Score 6.3
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact Low
CVSSv3 Version 3.1
CVSS v4 Scores
CVSS detail CNA (GitHub)
Base Score 5.1
Vector CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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
Attack Vector Local
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact Low
Vulnerable System Availability Impact None
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entries: 1268275 [NEW], 1268302 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.194
  • crun >= 1.14-3.1
SUSE Linux Micro 6.0
  • crun >= 1.14-3.1
 Patchnames:
SUSE-SLE-Micro-6.0-766 (aarch64,s390x,x86_64)
SUSE Linux Micro 6.1
  • crun >= 1.15-slfo.1.1_2.1
 Patchnames:
SUSE-SLE-Micro-6.1-585 (aarch64,ppc64le,s390x,x86_64)
openSUSE Tumbleweed
  • crun >= 1.28-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-11030

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Micro 6.0 crun Released
SUSE Linux Micro 6.1 crun Released

SUSE Timeline for this CVE

CVE page created: Sat Jun 13 21:00:01 2026
CVE page last modified: Mon Aug 24 18:04:28 2026