Bug 2188396 (CVE-2023-2194) - CVE-2023-2194 kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer()
Summary: CVE-2023-2194 kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer()
Keywords:
Status: NEW
Alias: CVE-2023-2194
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2188397 2188406 2188407 2188408 2188409 2189482 2189487 2190002 2190003
Blocks: 2186508
TreeView+ depends on / blocked
 
Reported: 2023-04-20 15:32 UTC by Mauro Matteo Cascella
Modified: 2024-02-13 01:12 UTC (History)
45 users (show)

Fixed In Version: kernel 6.3-rc4
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The userspace "data->block[0]" variable was not limited to a number between 0-255 and was used as the size of a memcpy, possibly writing beyond the end of dma_buffer. This issue could allow a local privileged user to crash the system or potentially achieve code execution.
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Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:3708 0 None None None 2023-06-21 14:38:37 UTC
Red Hat Product Errata RHSA-2023:3723 0 None None None 2023-06-21 14:39:13 UTC
Red Hat Product Errata RHSA-2023:4517 0 None None None 2023-08-08 08:19:52 UTC
Red Hat Product Errata RHSA-2023:4541 0 None None None 2023-08-08 07:54:18 UTC
Red Hat Product Errata RHSA-2024:0412 0 None None None 2024-01-24 16:43:37 UTC

Description Mauro Matteo Cascella 2023-04-20 15:32:55 UTC 
An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The flaw lies in the xgene_slimpro_i2c_xfer() function. Quoting the upstream commit below: "The data->block[0] variable comes from user and is a number between 0-255. Without proper check, the variable may be very large to cause an out-of-bounds when performing memcpy in slimpro_i2c_blkwr."

Upstream fix:
https://github.com/torvalds/linux/commit/92fbb6d1296f
Comment 1 Mauro Matteo Cascella 2023-04-20 15:34:24 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2188397]
Comment 6 Justin M. Forbes 2023-04-25 20:06:01 UTC 
This was fixed for Fedora with the 6.2.9 stable kernel updates.
Comment 7 errata-xmlrpc 2023-06-21 14:38:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:3708 https://access.redhat.com/errata/RHSA-2023:3708
Comment 8 errata-xmlrpc 2023-06-21 14:39:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:3723 https://access.redhat.com/errata/RHSA-2023:3723
Comment 10 errata-xmlrpc 2023-08-08 07:54:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:4541 https://access.redhat.com/errata/RHSA-2023:4541
Comment 11 errata-xmlrpc 2023-08-08 08:19:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:4517 https://access.redhat.com/errata/RHSA-2023:4517
Comment 14 errata-xmlrpc 2024-01-24 16:43:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0412 https://access.redhat.com/errata/RHSA-2024:0412
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