🛡️ CVE-2016-9962 — runc

⚪ Unknown ✅ No Known Exploit CWE-200 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Information Exposure in RunC

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2016-9962 is classified as CWE-200: Exposure of Sensitive Information. Information that should stay internal is disclosed to someone who is not authorised to see it.

Affected software

CVE-2016-9962 is recorded against 1 package.

  • github.com/opencontainers/runc

Timeline and source

Published on 20 December 2021 and last revised on 4 February 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
access.redhat.com (Web)
bugzilla.suse.com (Web)
github.com (Web)
lists.fedoraproject.org (Web)
lists.fedoraproject.org (Web)
lists.fedoraproject.org (Web)
lists.fedoraproject.org (Web)
security.gentoo.org (Web)
web.nvd.nist.gov (Web)
rhn.redhat.com (Web)
rhn.redhat.com (Web)
rhn.redhat.com (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE CWE-200
Public Exploit ✅ No
Source OSV
Published 2021-12-20
Updated 2026-08-12
Modified 2026-02-04

Affected Packages

Software From version Fixed in
github.com/opencontainers/runc — —

References

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