CVE-2016-9962
mediumpriority · track · 26EPSS 0.004 · 35 %ileDEEURUUSEPSS · scored 2026-10-27
RunC allowed additional container processes via 'runc exec' to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain access to file-descriptors of these new processes during the initialization and can lead to container escapes or modification of runC state before the process is fully placed inside the container.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- Fixedcontainer-selinux-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-2:1.12.5-14.el7.src as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-client-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-common-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-logrotate-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-lvm-plugin-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-novolume-plugin-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-rhel-push-plugin-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-v1.10-migrator-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0116 - Fixeddocker-client-latest-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0123 - Fixeddocker-latest-0:1.12.5-14.el7.src as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0123 - Fixeddocker-latest-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0123 - Fixeddocker-latest-logrotate-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0123 - Fixeddocker-latest-v1.10-migrator-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0123 - Fixedrunc-0:1.0.0-1.rc2.el7.src as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0127 - Fixedrunc-0:1.0.0-1.rc2.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2017:0127 - Workaroundcontainer-selinux-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-2:1.12.5-14.el7.src as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-client-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-common-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-logrotate-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-lvm-plugin-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-novolume-plugin-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-rhel-push-plugin-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-v1.10-migrator-2:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-client-latest-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-latest-0:1.12.5-14.el7.src as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-latest-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-latest-logrotate-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workarounddocker-latest-v1.10-migrator-0:1.12.5-14.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workaroundrunc-0:1.0.0-1.rc2.el7.src as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
- Workaroundrunc-0:1.0.0-1.rc2.el7.x86_64 as a component of Red Hat Enterprise Linux 7 Extrasredhat_csaf
On Red Hat systems with SELinux enabled, the dangers of even privileged containers are mitigated. SELinux prevents container processes from accessing host content even if those container processes manage to gain access to the actual file descriptors.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–7.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (34)
Products and version ranges known to be affected.
advisories (6)
Vendor and ecosystem advisories describing this.
- RHSA-2017:0116Red Hat Security Advisory: docker security, bug fix, and enhancement update2017-01-17csaf · redhat_csafUS
An update for docker is now available for Red Hat Enterprise Linux 7 Extras. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- RHSA-2017:0123Red Hat Security Advisory: docker-latest security, bug fix, and enhancement update2017-01-17csaf · redhat_csafUS
An update for docker-latest is now available for Red Hat Enterprise Linux 7 Extras. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- RHSA-2017:0127Red Hat Security Advisory: runc security and bug fix update2017-01-17csaf · redhat_csafUS
An update for runc is now available for Red Hat Enterprise Linux 7 Extras. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- WID-SEC-W-2025-2173docker: Schwachstelle ermöglicht PrivilegieneskalationDeutsch2017-01-11csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in docker ausnutzen, um seine Privilegien zu erhöhen.
- GHSA-gp4j-w3vj-7299Information Exposure in RunC2021-12-20ghsa · osvUS
RunC allowed additional container processes via 'runc exec' to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain access to file-descriptors of these new processes during the initialization and can lead to container escapes or modification of runC state before the process is fully placed inside the container.
- GO-2022-0835Information Exposure in RunC in github.com/opencontainers/runc2024-08-21vendor · osvUS
Information Exposure in RunC in github.com/opencontainers/runc
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (36)
External citations — patches, advisories, analysis.
- https://github.com/docker/docker/releases/tag/v1.12.6Patchcnnvd
- https://vigilance.fr/vulnerability/RHEL-7-privilege-escalation-via-Runc-CVE-2016-9962-Regression-32609cnnvd
- https://www.auscert.org.au/bulletins/76774cnnvd
- https://www.suse.com/support/update/announcement/2019/suse-su-20190573-1.htmlcnnvd
- http://rhn.redhat.com/errata/RHSA-2017-0116.htmlenisa_euvd
- http://rhn.redhat.com/errata/RHSA-2017-0123.htmlenisa_euvd
- http://rhn.redhat.com/errata/RHSA-2017-0127.htmlenisa_euvd
- http://seclists.org/fulldisclosure/2017/Jan/21enisa_euvd
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