Bug 1377330 (CVE-2016-7425) - CVE-2016-7425 kernel: SCSI arcmsr driver: Buffer overflow in arcmsr_iop_message_xfer()
Summary: CVE-2016-7425 kernel: SCSI arcmsr driver: Buffer overflow in arcmsr_iop_messa...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-7425
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: 1377331 1381976 1381977 1381978 1381979 1381980 1381982 1381983 1381984
Blocks: 1377333
TreeView+ depends on / blocked
 
Reported: 2016-09-19 12:59 UTC by Andrej Nemec
Modified: 2021-02-17 03:20 UTC (History)
34 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A heap-buffer overflow vulnerability was found in the arcmsr_iop_message_xfer() function in 'drivers/scsi/arcmsr/arcmsr_hba.c' file in the Linux kernel through 4.8.2. The function does not restrict a certain length field, which allows local users to gain privileges or cause a denial of service via an ARCMSR_MESSAGE_WRITE_WQBUFFER control code. This can potentially cause kernel heap corruption and arbitrary kernel code execution.
Clone Of:
Environment:
Last Closed: 2016-10-25 13:40:18 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2016-09-19 12:59:59 UTC 
A heap-buffer overflow vulnerability was found in the arcmsr_iop_message_xfer() function in 'drivers/scsi/arcmsr/arcmsr_hba.c' file in the Linux kernel through 4.8.2. The function does not restrict a certain length field, which allows local users to gain privileges or cause a denial of service via an ARCMSR_MESSAGE_WRITE_WQBUFFER control code. This can potentially cause kernel heap corruption and arbitrary kernel code execution.

Upstream patch:

http://marc.info/?l=linux-scsi&m=147394713328707&w=2

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7bc2b55a5c030685b399bb65b6baa9ccc3d1f167

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4bd173c30792791a6daca8c64793ec0a4ae8324f

Discussion thread:

http://marc.info/?t=147394719700004&r=1&w=2

References:

http://seclists.org/oss-sec/2016/q3/535
Comment 1 Andrej Nemec 2016-09-19 13:01:01 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1377331]
Comment 2 Fedora Update System 2016-09-28 05:57:24 UTC 
kernel-4.7.5-200.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-7179af3ac1
Comment 3 Fedora Update System 2016-09-28 06:25:36 UTC 
kernel-4.7.5-100.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-58eda97f25
Comment 4 Fedora Update System 2016-10-01 00:52:23 UTC 
kernel-4.7.5-200.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2016-10-01 04:20:28 UTC 
kernel-4.7.5-100.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 12 Vladis Dronov 2016-10-06 14:58:27 UTC 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. 6, 7 and Red Hat Enterprise MRG-2 as only the privileged user can exploit the flaw.
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