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TI-2026-29788 Aliases CVE-2026-41163

bubblewrap vulnerable to privilege escalation in setuid mode via ptrace

Priority MEDIUM 43CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-269.

Summary

bubblewrap is a low-level unprivileged sandboxing tool. From version 0.11.0 to before version 0.11.2, if bubblewrap is installed in setuid mode then the user can use ptrace to attach to bubblewrap and control the unprivileged part of the sandbox setup phase. This allows the attacker to arbitrarily use the privileged operations, and in particular the "overlay mount" operation, allowing the creation of overlay mounts which is otherwise not allowed in the setuid version of bubblewrap. This issue has been patched in version 0.11.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00274 19th percentileScored 2026-11-07
Fix Fixed bubblewrap (containers): 0.11.2Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
containersbubblewrap0.11.0 to before 0.11.20.11.2Patch availableCNA
  • bubblewrap Vendorcontainers Affected 0.11.0 to before 0.11.2 Fixed in 0.11.2 Patch available CNA

Remediation

  • Fix · CNA bubblewrap (containers) Fixed in 0.11.2

Red Hat 1 advisory

  • RHSA-2026:60368 Released 2026-08-26 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images bubblewrap-0.12.0-1.hum1@aarch64, bubblewrap-0.12.0-1.hum1@src, bubblewrap-0.12.0-1.hum1@x86_64

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:60368
Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41163
  2. 2026-11-05 Affected versions changed · Red Hat

References

Other 2

  • TI-2025-18645 .krun_config.json symlink attack creates or overwrites file on the host in crun CVSS 4.0HIGH 8.5
  • TI-2026-23721 Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation CVSS 3.1HIGH 7.8
  • TI-2026-37901 fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC) CVSS 4.0LOW 2.0
  • TI-2024-07805 Containers/aardvark-dns: tcp query handling flaw in aardvark-dns leading to denial of service CVSS 3.1HIGH 7.5
  • TI-2024-08665 Podman: buildah: cri-o: fips crypto-policy directory mounting issue in containers/common go library CVSS 3.1HIGH 8.2
  • TI-2020-04347 Privilege escalation in setuid mode via user namespaces in Bubblewrap CVSS 3.1HIGH 7.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences