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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
CVE-2018-5750 kernel: Kernel address information leak in drivers/acpi/sbshc.c...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20171219,repor...
: Security
Depends On: 1539709 1539708 1547007 1547009 1547010
Blocks: 1539711
  Show dependency tree / graph
 
Reported: 2018-01-29 08:44 EST by Adam Mariš
Modified: 2018-10-30 04:57 EDT (History)
44 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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.
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:0676 None None None 2018-04-10 04:18 EDT
Red Hat Product Errata RHSA-2018:1062 None None None 2018-04-10 05:42 EDT
Red Hat Product Errata RHSA-2018:2948 None None None 2018-10-30 04:57 EDT

  None (edit)
Description Adam Mariš 2018-01-29 08:44:33 EST 
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 08:45:21 EST 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1539708]
Comment 8 Eric Christensen 2018-02-20 09:41:44 EST 
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 04:18:34 EDT 
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 05:42:28 EDT 
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 04:57:26 EDT 
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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