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Fencer Intel
high 7.8

CVE-2015-1328 in the critical feed json

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 pe…

published 2016-11-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-1468

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
37.7%
EPSS 37.7% chance of exploitation in 30 days, percentile 98%
public exploits
4
Metasploit, Exploit-DB

Summary

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.

Patch / fix

  • linux Ubuntu 14.04 LTS 3.13.0-55.92
  • linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-21.21~14.04.1
  • linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-41.55~14.04.1

ubuntu advisories UBUNTU-CVE-2015-1328

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Timeline

  1. First public exploit (Metasploit exploit/linux/local/overlayfs_priv_esc)
  2. Published

Exploit prediction

37.68% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/linux/local/overlayfs_priv_esc Overlayfs Privilege Escalation metasploit exploit, good rank, 2015-06-16
  • EDB-40688 Linux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit) local, 2016-11-02
  • EDB-37293 Linux Kernel 3.13.0 < 3.19 (Ubuntu 12.04/14.04/14.10/15.04) - 'overlayfs' Local Privilege Escalation (Access /etc/shadow) local, 2015-06-16
  • EDB-37292 Linux Kernel 3.13.0 < 3.19 (Ubuntu 12.04/14.04/14.10/15.04) - 'overlayfs' Local Privilege Escalation local, 2015-06-16

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.