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CVE-2015-3629

Arbitrary File Write in Libcontainer

7.8 HighFix available

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.60%Down 0.3 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.8

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
CVE-2015-3629
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-59
Updated
2026-11-02
CVE List No score

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
CVE-2015-3629
Updated
2026-11-02
EUVDEUVD-2022-0995 No score

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
EUVD-2022-0995
Updated
2026-11-03
GitHub AdvisoriesGHSA-g44j-7vp3-68cv 8.4

Arbitrary File Write in Libcontainer

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
GHSA-g44j-7vp3-68cv
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-59
Updated
2026-11-02
OSVBELL-CVE-2015-3629 7.8

CVE-2015-3629 does not affect BellSoft software

Record
BELL-CVE-2015-3629
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSV 7.8

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
CVE-2015-3629
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 9 moreShow less
OSVDEBIAN-CVE-2015-3629 7.8

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
DEBIAN-CVE-2015-3629
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-g44j-7vp3-68cv 8.4

Arbitrary File Write in Libcontainer

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
GHSA-g44j-7vp3-68cv
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-59
Updated
2026-11-02
OSVUBUNTU-CVE-2015-3629 7.8

Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

Record
UBUNTU-CVE-2015-3629
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGO-2022-0647 No score

Arbitrary File Write in Libcontainer in github.com/docker/docker

Arbitrary File Write in Libcontainer in github.com/docker/docker

Record
GO-2022-0647
Updated
2026-11-02
OSVopenSUSE-SU-2024:10532-1 No score

docker-1.12.3-4.1 on GA media

These are all security issues fixed in the docker-1.12.3-4.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10532-1
Updated
2026-11-02
OSVopenSUSE-SU-2025:15589-1 No score

docker-stable-24.0.9_ce-15.1 on GA media

These are all security issues fixed in the docker-stable-24.0.9_ce-15.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15589-1
Updated
2026-11-02
OSVSUSE-SU-2015:0984-1 No score

Security update for docker

The Linux container runtime environment Docker was updated to version 1.6.2 to fix several security and non-security issues.

  • Security:

    • Fix read/write /proc paths. (CVE-2015-3630)
    • Prohibit VOLUME /proc and VOLUME /. (CVE-2015-3631)
    • Fix opening of file-descriptor 1. (CVE-2015-3627)
    • Fix symlink traversal on container respawn allowing local privilege escalation. (CVE-2015-3629)
  • Runtime:

    • Update Apparmor policy to not allow mounts.
Record
SUSE-SU-2015:0984-1
Updated
2026-11-02
OSVSUSE-SU-2025:03540-1 No score

Security update for docker-stable

This update for docker-stable fixes the following issues:

  • Include historical changelog data from before the docker-stable fork. The initial changelog entry did technically provide all the necessary information, but our CVE tracking tools do not understand how the package is forked and so it seems that this package does not include fixes for ~12 years of updates. So, include a copy of the original package's changelog up until the fork point. (bsc#1250596)

  • Remove git-core recommends on SLE. Most SLE systems have installRecommends=yes by default and thus end up installing git with Docker. bsc#1250508

    This feature is mostly intended for developers ('docker build git://') so most users already have the dependency installed, and the error when git is missing is fairly straightforward (so they can easily figure out what they need to install).

  • Backport https://github.com/moby/moby/pull/48517. bsc#1247362

  • Update to docker-buildx v0.25.0. Upstream changelog: https://github.com/docker/buildx/releases/tag/v0.25.0

  • Do not try to inject SUSEConnect secrets when in Rootless Docker mode, as Docker does not have permission to access the host zypper credentials in this mode (and unprivileged users cannot disable the feature using /etc/docker/suse-secrets-enable.) bsc#1240150

  • Initial docker-stable fork, forked from Docker 24.0.7-ce release (packaged on 2024-02-14). The original changelog is included below for historical reference.

Record
SUSE-SU-2025:03540-1
Updated
2026-11-02
OSVSUSE-SU-2025:03545-1 No score

Security update for docker-stable

This update for docker-stable fixes the following issues:

Note this update contains a already fixed references mostly.

  • Remove git-core recommends on SLE to avoid pulling it in unnecessary. (bsc#1250508)

    This feature is mostly intended for developers ('docker build git://') so most users already have the dependency installed, and the error when git is missing is fairly straightforward (so they can easily figure out what they need to install).

  • Include historical changelog data from before the docker-stable fork. The initial changelog entry did technically provide all the necessary information, but our CVE tracking tools do not understand how the package is forked and so it seems that this package does not include fixes for ~12 years of updates. So, include a copy of the original package's changelog up until the fork point. bsc#1250596

  • Update to docker-buildx v0.25.0. Upstream changelog: https://github.com/docker/buildx/releases/tag/v0.25.0

  • Update to Go 1.23 for building now that upstream has switched their 23.0.x LTSS to use Go 1.23.

  • Do not try to inject SUSEConnect secrets when in Rootless Docker mode, as Docker does not have permission to access the host zypper credentials in this mode (and unprivileged users cannot disable the feature using /etc/docker/suse-secrets-enable.) bsc#1240150

  • Initial docker-stable fork, forked from Docker 24.0.7-ce release (packaged on 2024-02-14). The original changelog is included below for historical reference.

Record
SUSE-SU-2025:03545-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/docker/docker
Go
1.6.0 up to 1.6.1
1.6.1
docker.io
Debian:12
before 1.6.1+dfsg1-1
1.6.1+dfsg1-1
docker.io
Debian:13
before 1.6.1+dfsg1-1
1.6.1+dfsg1-1
docker.io
Debian:14
before 1.6.1+dfsg1-1
1.6.1+dfsg1-1
atomic
Red Hat:rhel_extras_other:7
before 0:0-0.40.gitf863afd.el7
0:0-0.40.gitf863afd.el7
docker
Red Hat:rhel_extras_other:7
before 0:1.6.2-14.el7
0:1.6.2-14.el7
docker-logrotate
Red Hat:rhel_extras_other:7
before 0:1.6.2-14.el7
0:1.6.2-14.el7
docker-python
Red Hat:rhel_extras_other:7
before 0:1.0.0-53.el7
0:1.0.0-53.el7
docker-selinux
Red Hat:rhel_extras_other:7
before 0:1.6.2-14.el7
0:1.6.2-14.el7
python-websocket-client
Red Hat:rhel_extras_other:7
before 0:0.14.1-97.el7
0:0.14.1-97.el7
Show 23 moreShow less
Affected packages
PackageAffectedFixed
docker
SUSE:Linux Enterprise Server 12
before 1.6.2-31.2
1.6.2-31.2
docker
SUSE:Linux Enterprise Server for SAP Applications 12
before 1.6.2-31.2
1.6.2-31.2
docker-stable
SUSE:Linux Enterprise Server 12 SP5-LTSS
before 24.0.9_ce-1.20.1
24.0.9_ce-1.20.1
docker-stable
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5
before 24.0.9_ce-1.20.1
24.0.9_ce-1.20.1
docker-stable
SUSE:Linux Enterprise Module for Containers 15 SP6
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Module for Containers 15 SP7
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Server 15 SP3-LTSS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Server 15 SP4-LTSS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Server 15 SP5-LTSS
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Server for SAP Applications 15 SP3
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Server for SAP Applications 15 SP4
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Linux Enterprise Server for SAP Applications 15 SP5
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
SUSE:Enterprise Storage 7.1
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker-stable
openSUSE:Leap 15.6
before 24.0.9_ce-150000.1.25.1
24.0.9_ce-150000.1.25.1
docker.io
Ubuntu:14.04:LTS
before 1.6.2~dfsg1-1ubuntu4~14.04.1, plus listed versions
0.6.7+dfsg1-10.6.7+dfsg1-20.6.7+dfsg1-30.7.1+dfsg1-10.7.6+dfsg1-10.8.1+dfsg1-10.9.1~dfsg1-21.0.1~dfsg1-0ubuntu1~ubuntu0.14.04.1
1.6.2~dfsg1-1ubuntu4~14.04.1
docker.io
Ubuntu:16.04:LTS
before 1.6.2~dfsg1-1ubuntu4
1.6.2~dfsg1-1ubuntu4
docker
openSUSE:Tumbleweed
before 1.12.3-4.1
1.12.3-4.1
docker-stable
openSUSE:Tumbleweed
before 24.0.9_ce-15.1
24.0.9_ce-15.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-3629 is a high vulnerability (CVSS 7.8) in Docker Libcontainer, published May 18, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 48th percentile. Fixed in github.com/docker/docker 1.6.1.

References

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Left out here: 95 references. The JSON record has them.

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