Bug 1177260 (CVE-2014-9419) - CVE-2014-9419 kernel: partial ASLR bypass through TLS base addresses leak
Summary: CVE-2014-9419 kernel: partial ASLR bypass through TLS base addresses leak
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-9419
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1177263 1177353 1177354 1223330 1223331 1223723
Blocks: 1176101
TreeView+ depends on / blocked
 
Reported: 2014-12-25 13:36 UTC by Vasyl Kaigorodov
Modified: 2021-02-17 05:52 UTC (History)
36 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process.
Clone Of:
Environment:
Last Closed: 2019-06-08 02:37:15 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:1081 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2015-06-09 20:35:00 UTC
Red Hat Product Errata RHSA-2015:2152 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2015-11-20 00:56:02 UTC
Red Hat Product Errata RHSA-2015:2411 0 normal SHIPPED_LIVE Important: kernel-rt security, bug fix, and enhancement update 2015-11-19 11:24:06 UTC

Description Vasyl Kaigorodov 2014-12-25 13:36:17 UTC 
It was found that the Linux kernel is vulnerable to an information leakage flaw in the way certain segment registers and TLS are changed during context switch.

An unprivileged user/process could use this flaw to leak other process's user space TLS base address.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/f647d7c155f069c1a068030255c300663516420e

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2014/12/18/17
Comment 1 Vasyl Kaigorodov 2014-12-25 13:37:40 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1177263]
Comment 2 Prasad Pandit 2014-12-26 14:05:30 UTC 
Statement:

This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.

This issue has been rated as having Low security impact and is not currently planned to be addressed in future updates for Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.
Comment 4 Fedora Update System 2015-01-11 02:58:14 UTC 
kernel-3.17.8-300.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2015-01-13 00:05:49 UTC 
kernel-3.17.8-200.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 12 errata-xmlrpc 2015-06-09 14:48:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:1081 https://rhn.redhat.com/errata/RHSA-2015-1081.html
Comment 13 errata-xmlrpc 2015-11-19 13:04:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2411 https://rhn.redhat.com/errata/RHSA-2015-2411.html
Comment 14 errata-xmlrpc 2015-11-19 20:56:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2152 https://rhn.redhat.com/errata/RHSA-2015-2152.html
Comment 15 errata-xmlrpc 2015-11-19 23:23:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2152 https://rhn.redhat.com/errata/RHSA-2015-2152.html
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