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Bug 1295287 (CVE-2015-8709) - CVE-2015-8709 Kernel: ptrace: potential privilege escalation in user namespaces
Summary: CVE-2015-8709 Kernel: ptrace: potential privilege escalation in user namespaces
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2015-8709
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1295288
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-01-04 06:14 UTC by Prasad Pandit
Modified: 2021-02-17 04:34 UTC (History)
29 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-06-08 02:46:52 UTC
Embargoed:


Attachments (Terms of Use)

Description Prasad Pandit 2016-01-04 06:14:01 UTC
Linux kernel built with the User Namespaces(CONFIG_USER_NS) support is
vulnerable to a potential privilege escalation flaw. It could occur when a
root owned process tries to enter a user namespace, wherein a user attempts
to attach the entering process via ptrace(1).

A privileged name space user could use this flaw to potentially escalate their
privileges on the system.

Upstream fix:
-------------
  -> https://lkml.org/lkml/2015/12/25/71

Reference:
----------
  -> http://seclists.org/oss-sec/2015/q4/614

Comment 1 Prasad Pandit 2016-01-04 06:15:16 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1295288]

Comment 2 Prasad Pandit 2016-01-04 10:41:42 UTC
Statement:

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

Comment 4 Fedora Update System 2016-01-12 07:59:25 UTC
kernel-4.3.3-300.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2016-02-01 06:23:43 UTC
kernel-4.3.4-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.


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