CVE-2012-0055: Linux kernel OverlayFS vulnerability

CVE-2012-0055: OverlayFS in the Linux kernel before 3.0.0-16.28, as used in Ubuntu 10.0.4 LTS and 11.10, is missing inode...

OverlayFS in the Linux kernel before 3.0.0-16.28, as used in Ubuntu 10.0.4 LTS and 11.10, is missing inode security checks which could allow attackers to bypass security restrictions and perform unauthorized actions.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 18:09 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2012-0055 is a Linux kernel OverlayFS security-check flaw reported for older Ubuntu kernels. If present, it could let an attacker bypass intended file security restrictions and take unauthorized actions. The sources do not provide a CVSS score or evidence of active exploitation. Exposure is most likely limited to legacy systems running affected Ubuntu 10.04 LTS or 11.10 kernels with OverlayFS support before 3.0.0-16.28. Modern supported distributions are not shown as affected in the provided bundle. Prioritize this during legacy Linux cleanup rather than as an emergency internet-wide issue. The business risk is highest where old Ubuntu hosts still run sensitive workloads or allow untrusted local access. Mitigation focus: Inventory systems running Ubuntu 10.04 LTS or 11.10 kernels.; Upgrade affected kernels to 3.0.0-16.28 or later where applicable.; Review the referenced Ubuntu security notices for exact fixed packages..

Prepared: Jun 6, 2026, 02:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 19, 2020, 17:28 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2012-0055CVE reference · x_refsource_MISC
https://access.redhat.com/security/cve/cve-2012-0055CVE reference · x_refsource_MISC
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/915941CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

Linux kernelOverlayFSbefore 3.0.0-16.28, as used in Ubuntu 10.0.4 LTS and 11.10Listed

Weakness

CWE details

No CWE listed

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