Bug 1539706 (CVE-2018-5750) - CVE-2018-5750 kernel: Kernel address information leak in drivers/acpi/sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass
Summary: CVE-2018-5750 kernel: Kernel address information leak in drivers/acpi/sbshc.c...
Status: NEW
Alias: CVE-2018-5750
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20171219,repor...
Keywords: Security
Depends On: 1539709 1539708 1547007 1547009 1547010
Blocks: 1539711
TreeView+ depends on / blocked
 
Reported: 2018-01-29 13:44 UTC by Adam Mariš
Modified: 2019-05-16 08:08 UTC (History)
43 users (show)

(edit)
The acpi_smbus_hc_add function in drivers/acpi/sbshc.c in the Linux kernel, through 4.14.15, allows local users to obtain sensitive address information by reading dmesg data from an SBS HC printk call.
Clone Of:
(edit)
Last Closed:


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:0676 None None None 2018-04-10 08:18 UTC
Red Hat Product Errata RHSA-2018:1062 None None None 2018-04-10 09:42 UTC
Red Hat Product Errata RHSA-2018:2948 None None None 2018-10-30 08:57 UTC

Description Adam Mariš 2018-01-29 13:44:33 UTC
The acpi_smbus_hc_add function in drivers/acpi/sbshc.c in the Linux kernel through 4.14.15 allows local users to obtain sensitive address information by reading dmesg data from an SBS HC printk call.

References:

https://patchwork.kernel.org/patch/10174835/

An upstream fix:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43cdd1b716b26f6af16da4e145b6578f98798bf6

Comment 1 Adam Mariš 2018-01-29 13:45:21 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1539708]

Comment 8 Eric Christensen 2018-02-20 14:41:44 UTC
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG 2, as KASLR feature is not present or enabled in these products.

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7, its real-time kernel, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.

Comment 9 errata-xmlrpc 2018-04-10 08:18:34 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0676 https://access.redhat.com/errata/RHSA-2018:0676

Comment 10 errata-xmlrpc 2018-04-10 09:42:28 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1062 https://access.redhat.com/errata/RHSA-2018:1062

Comment 11 errata-xmlrpc 2018-10-30 08:57:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:2948 https://access.redhat.com/errata/RHSA-2018:2948


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