RLSA-2026:85306

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Source

https://errata.rockylinux.org/RLSA-2026:85306

Import Source

https://storage.googleapis.com/resf-osv-data/RLSA-2026:85306.json

JSON Data

https://api.test.osv.dev/v1/vulns/RLSA-2026:85306

Upstream

CVE-2026-87766

Published

2026-10-21T06:37:12Z

Modified

2026-10-21T07:15:02Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

Important: bubblewrap security update

Details

Bubblewrap (/usr/bin/bwrap) is a core execution engine for unprivileged containers that works as a setuid binary on kernels without user namespaces.

Security Fix(es):

bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup (CVE-2026-87766)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Database specific

{
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:85306"
}

References

Credits

- Rocky Enterprise Software Foundation
- Red Hat

Affected packages

Rocky Linux:8 / bubblewrap

Package

Name: bubblewrap
Purl: pkg:rpm/rocky-linux/bubblewrap?distro=rocky-linux-8&epoch=0

Affected ranges

Type

ECOSYSTEM

Events

Introduced

Fixed

0:0.4.0-3.el8_10

Database specific

Show details

{
    "yum_repository": "BaseOS"
}

Database specific

source

"https://storage.googleapis.com/resf-osv-data/RLSA-2026:85306.json"