How severe is CVE-2015-1328?

CVE-2015-1328 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-1328 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 38% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1328?

CVE-2015-1328 primarily affects Canonical Ubuntu Linux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-1328?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-1328 published?

CVE-2015-1328 was published on 2016-11-28 and last updated on 2026-06-17.

CVE-2015-1328

CVE-2015-1328 is a high-severity vulnerability in Canonical Ubuntu Linux with a CVSS 3.x base score of 7.8. Its EPSS exploit-prediction score of 38% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 38% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Canonical Ubuntu Linux
Published: 2016-11-28
Last modified: 2026-06-17

Description

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.

Frequently asked questions

What is CVE-2015-1328?: The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.
How severe is CVE-2015-1328?: CVE-2015-1328 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-1328 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 38% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1328?: CVE-2015-1328 primarily affects Canonical Ubuntu Linux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-1328?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-1328 published?: CVE-2015-1328 was published on 2016-11-28 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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