RHSA-2016:0065
Vulnerability from csaf_redhat - Published: 2016-01-25 19:13 - Updated: 2025-11-21 17:54Summary
Red Hat Security Advisory: kernel-rt security update
Severity
Important
Notes
Topic: Updated kernel-rt packages that fix one security issue are now available
for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.
Details: The kernel packages contain the Linux kernel, the core of any Linux
operating system.
* A use-after-free flaw was found in the way the Linux kernel's key
management subsystem handled keyring object reference counting in certain
error path of the join_session_keyring() function. A local, unprivileged
user could use this flaw to escalate their privileges on the system.
(CVE-2016-0728, Important)
Red Hat would like to thank the Perception Point research team for
reporting this issue.
All kernel-rt users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. The system must be
rebooted for this update to take effect.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A use-after-free flaw was found in the way the Linux kernel's key management subsystem handled keyring object reference counting in certain error path of the join_session_keyring() function. A local, unprivileged user could use this flaw to escalate their privileges on the system.
7.2 ()
Affected products
Fixed
12 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-0:3.10.0-327.4.5.rt56.206.el7_2.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-debug-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-debug-debuginfo-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-debug-devel-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-debuginfo-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-debuginfo-common-x86_64-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-devel-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-doc-0:3.10.0-327.4.5.rt56.206.el7_2.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-trace-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-trace-debuginfo-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RT-7.2.Z:kernel-rt-trace-devel-0:3.10.0-327.4.5.rt56.206.el7_2.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
References
9 references
Acknowledgments
the Perception Point research team
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"cve": "CVE-2016-0728",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2016-01-07T00:00:00+00:00",
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"notes": [
{
"category": "description",
"text": "A use-after-free flaw was found in the way the Linux kernel\u0027s key management subsystem handled keyring object reference counting in certain error path of the join_session_keyring() function. A local, unprivileged user could use this flaw to escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Possible use-after-free vulnerability in keyring facility",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6. \n\nRefer to https://access.redhat.com/node/2131021 for further information.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-0728",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-0728"
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{
"category": "external",
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"date": "2016-01-25T19:13:36+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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],
"title": "kernel: Possible use-after-free vulnerability in keyring facility"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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