Bug 1671343 (CVE-2017-18360) - CVE-2017-18360 kernel: Division by zero in change_port_settings in drivers/usb/serial/io_ti.c resulting in a denial of service
Summary: CVE-2017-18360 kernel: Division by zero in change_port_settings in drivers/us...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2017-18360
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: 1540721 1553351 1671752 1671753 1671755
Blocks: 1671344
TreeView+ depends on / blocked
 
Reported: 2019-01-31 13:05 UTC by Andrej Nemec
Modified: 2022-03-13 16:54 UTC (History)
42 users (show)

Fixed In Version:
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Doc Text:
A division-by-zero in set_termios(), when debugging is enabled, was found in the Linux kernel. When the [io_ti] driver is loaded, a local unprivileged attacker can request incorrect high transfer speed in the change_port_settings() in the drivers/usb/serial/io_ti.c so that the divisor value becomes zero and causes a system crash resulting in a denial of service.
Clone Of:
Environment:
Last Closed: 2020-05-20 21:18:57 UTC
Embargoed:

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Description Andrej Nemec 2019-01-31 13:05:27 UTC 
A division-by-zero in set_termios() when debugging is enabled was found in the Linux kernel. When [io_ti] driver is loaded a local unprivileged attacker can request incorrect high transfer speed in the change_port_settings() in the drivers/usb/serial/io_ti.c so that the divisor value becomes zero and causes a system crash and a denial-of-service.

References:

https://marc.info/?l=linux-usb&m=149449572020916&w=2

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6aeb75e6adfaed16e58780309613a578fe1ee90b
Comment 10 Product Security DevOps Team 2020-05-20 21:18:57 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-2017-18360
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