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Bug 1568011 - (CVE-2018-10087) CVE-2018-10087 kernel: Undefined behavior in kernel/exit.c:kernel_wait4() function allows local denial of service
CVE-2018-10087 kernel: Undefined behavior in kernel/exit.c:kernel_wait4() fun...
Status: CLOSED NOTABUG
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=20170711,repor...
: Security
Depends On: 1569960
Blocks: 1568015
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Reported: 2018-04-16 11:12 EDT by Adam Mariš
Modified: 2018-05-03 05:46 EDT (History)
44 users (show)

See Also:
Fixed In Version: kernel 4.13
Doc Type: If docs needed, set a value
Doc Text:
The kernel_wait4 function in kernel/exit.c in the Linux kernel, when an unspecified architecture and compiler is used, might allow local users to cause a denial of service by triggering an attempted use of the -INT_MIN value.
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Clone Of:
Environment:
Last Closed: 2018-04-20 07:54:49 EDT
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2018-04-16 11:12:28 EDT 
The kernel_wait4 function in kernel/exit.c in the Linux kernel, when an unspecified architecture and compiler is used, might allow local users to cause a denial of service by triggering an attempted use of the -INT_MIN value.

References:

https://marc.info/?l=linux-mm&m=149726503820915&w=2

An upstream fix:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd83c161fbcc5d8be637ab159c0de015cbff5ba4
Comment 3 Vladis Dronov 2018-04-20 07:49:34 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1569960]
Comment 4 Vladis Dronov 2018-04-20 07:53:23 EDT 
Note:

This bug is present in certain Red Hat products, but the security impact is absent. Therefore, we do not consider this bug to be a security flaw.
Comment 5 Justin M. Forbes 2018-04-20 13:22:16 EDT 
This was fixed for Fedora with the 4.14 kernel updates.
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