Bug 1757368 (CVE-2017-18551) - CVE-2017-18551 kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c
Summary: CVE-2017-18551 kernel: out of bounds write in function i2c_smbus_xfer_emulate...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-18551
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:
Depends On: 1757369 Engineering1804074 Engineering1822641 Engineering1822642 Red Hat1888692 Red Hat1894458 Red Hat1894459 Red Hat1894460 Engineering1894461
Blocks: Embargoed1757371
TreeView+ depends on / blocked
 
Reported: 2019-10-01 10:39 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:21 UTC (History)
50 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An out of bounds (OOB) memory access flaw was found in i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c in I2C subsystem. A read request for length (data->block[0]) greater than 'I2C_SMBUS_BLOCK_MAX + 1' may cause underlying I2C driver write out of array's boundary. This could allow a local attacker with special user privilege (or root) to crash the system or leak kernel internal information.
Clone Of:
Environment:
Last Closed: 2020-05-12 16:31:55 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4416 0 None None None 2020-10-29 15:09:13 UTC
Red Hat Product Errata RHBA-2020:4417 0 None None None 2020-10-29 15:07:43 UTC
Red Hat Product Errata RHBA-2020:4418 0 None None None 2020-10-29 15:13:01 UTC
Red Hat Product Errata RHBA-2020:4419 0 None None None 2020-10-29 15:11:57 UTC
Red Hat Product Errata RHBA-2020:4420 0 None None None 2020-10-29 15:50:42 UTC
Red Hat Product Errata RHSA-2020:2104 0 None None None 2020-05-12 15:12:22 UTC
Red Hat Product Errata RHSA-2020:4060 0 None None None 2020-09-29 20:51:20 UTC
Red Hat Product Errata RHSA-2020:4062 0 None None None 2020-09-29 18:57:49 UTC
Red Hat Product Errata RHSA-2020:5206 0 None None None 2020-11-24 10:55:52 UTC
Red Hat Product Errata RHSA-2020:5430 0 None None None 2020-12-15 08:55:07 UTC
Red Hat Product Errata RHSA-2020:5656 0 None None None 2020-12-22 09:31:58 UTC

Description Dhananjay Arunesh 2019-10-01 10:39:40 UTC 
An out of bounds (OOB) memory access flaw was found in i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c in I2C subsystem. A read request for length (data->block[0]) greater than 'I2C_SMBUS_BLOCK_MAX + 1' may cause underlying I2C driver write out of array's boundary. This could allow a local attacker with special user privilege (or root) to crash the system or leak kernel internal information.
 

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89c6efa61f5709327ecfa24bff18e57a4e80c7fa
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.15
Comment 1 Dhananjay Arunesh 2019-10-01 10:40:20 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1757369]
Comment 2 Justin M. Forbes 2019-10-01 13:48:32 UTC 
This was fixed for Fedora in the 4.14.15 stable update
Comment 3 Rohit Keshri 2020-02-18 07:41:02 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 11 errata-xmlrpc 2020-05-12 15:12:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:2104 https://access.redhat.com/errata/RHSA-2020:2104
Comment 12 Product Security DevOps Team 2020-05-12 16:31:55 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2017-18551
Comment 13 errata-xmlrpc 2020-09-29 18:57:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4062 https://access.redhat.com/errata/RHSA-2020:4062
Comment 14 errata-xmlrpc 2020-09-29 20:51:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4060 https://access.redhat.com/errata/RHSA-2020:4060
Comment 34 errata-xmlrpc 2020-11-24 10:55:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.7 Extended Update Support

Via RHSA-2020:5206 https://access.redhat.com/errata/RHSA-2020:5206
Comment 35 errata-xmlrpc 2020-12-15 08:54:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Advanced Update Support
  Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.4 Telco Extended Update Support

Via RHSA-2020:5430 https://access.redhat.com/errata/RHSA-2020:5430
Comment 36 errata-xmlrpc 2020-12-22 09:32:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2020:5656 https://access.redhat.com/errata/RHSA-2020:5656
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