Exploitation reportedNot in CISA KEV yet

CVE-2015-1328

Exploitation reported by one source. First attested on 2025-09-19 by GCVE · kevintel.

Published2016-11-28
WeaknessCWE-264

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2016-11-2803:59CVE publishedNVD
2025-09-1906:22Listed as exploited by GCVEGCVE
2025-09-1906:22Exploitation first reportedGCVE
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-1328?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-1328?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Canonical ubuntu linux

Branch	Affected	Fixed in	Source
15.4	≤ 15.04	no fix published	NVD

Linux linux kernel

Branch	Affected	Fixed in	Source
3.19	≤ 3.19	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

people.canonical.comVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 11 repositories, unverifiedSR7-HACKING/LINUX-VULNERABILITY-CVE-2015-1328notlikethis/CVE-2015-1328elit3pwner/CVE-2015-1328-GoldenEyeBlackFrog-hub/cve-2015-1328YastrebX/CVE-2015-1328

Sources

GCVEexploitation2025-09-19
NVDCVSS 3.07.8read 2026-10-23
NVDCVSS 2.07.2read 2026-10-23
NVDweakness (CWE)CWE-264read 2026-10-23
FIRST EPSSEPSS score37.7 %read 2026-10-23
PoC-in-GitHubproof of concept11read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2016-11-28
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2015-1328?

Is CVE-2015-1328 actively exploited?

Active exploitation of CVE-2015-1328 has not been confirmed. Its EPSS score was 37.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2015-1328?

CVE-2015-1328 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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