CVE-2016-0728

highpriority · track · 42EPSS 0.034 · 89 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

11 exploits · PoC

Likely / severe?

3.44% (89th) EPSS

CVSS 7.2 · high

Is it mine?

68 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case, which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416US

exploits (11)

Public proof-of-concept and weaponised exploit code.

EDB-39277Linux Kernel 4.4.1 - REFCOUNT Overflow Use-After-Free in Keyrings Local Privilege Escalation (1)PoC · exploit_db
EDB-40003Linux Kernel 4.4.1 - REFCOUNT Overflow Use-After-Free in Keyrings Local Privilege Escalation (2)PoC · exploit_db
bittorrent3389/cve-2016-0728a exploit for cve-2016-0728PoC · poc_in_github
googleweb/CVE-2016-0728googleweb/CVE-2016-0728PoC · poc_in_github
hal0taso/CVE-2016-0728cve-2016-0728 exploit and summaryPoC · poc_in_github
kennetham/cve_2016_0728CVE-2016-0728 Linux Kernel VulnerabilityPoC · poc_in_github

affected products (68)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Debian Linux Wheezy (7.0)all versionscert_bundDEcpe:/o:debian:debian_linux:7.0
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Open Source Linux Kernelall versionscert_bundDEcpe:/o:linux:linux_kernel:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux 6all versionscert_bundDEcpe:/o:redhat:enterprise_linux:6
Red Hat Enterprise Linux 7all versionscert_bundDEcpe:/o:redhat:enterprise_linux:7
Red Hat Enterprise Linux Desktop 6all versionscert_bundDEcpe:/o:redhat:enterprise_linux_desktop:6
Red Hat Enterprise Linux HPC Node 6all versionscert_bundDEcpe:/o:redhat:enterprise_linux_hpc_node:6
Red Hat Enterprise Linux Workstation 6all versionscert_bundDEcpe:/o:redhat:enterprise_linux_workstation:6
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE Linux Enterprise Desktopall versionscert_bundDEcpe:/o:suse:linux_enterprise_desktop:-
SUSE Linux Enterprise Serverall versionscert_bundDEcpe:/o:suse:linux_enterprise_server:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Ubuntu Linux 12.04 LTSall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:12.04:-:lts
Ubuntu Linux 14.04 LTSall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:14.04:-:lts
Ubuntu Linux 15.04all versionscert_bundDEcpe:/o:canonical:ubuntu_linux:15.04
Ubuntu Linux 15.10all versionscert_bundDEcpe:/o:canonical:ubuntu_linux:15.10
n/a n/a≤ n/aenisa_euvdEU

showing 20 of 68

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0153Linux Kernel: Mehrere SchwachstellenDeutsch2016-01-19csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder um seine Privilegien zu erweitern.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2016-02-08modified 2026-06-17

references (133)

External citations — patches, advisories, analysis.

scry

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