RLSA-2026:85308

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Source
https://errata.rockylinux.org/RLSA-2026:85308
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:85308.json
JSON Data
https://api.test.osv.dev/v1/vulns/RLSA-2026:85308
Upstream
Published
2026-10-21T12:08:45Z
Modified
2026-10-21T12:30:02Z
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-2026:85308"
}
References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:10 / bubblewrap

Package

Name
bubblewrap
Purl
pkg:rpm/rocky-linux/bubblewrap?distro=rocky-linux-10&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:0.10.0-5.el10_2
Database specific
Show details 
{
    "yum_repository": "BaseOS"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:85308.json"