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Bug 1568205 - (CVE-2018-10124) CVE-2018-10124 kernel: Undefined behaviour with INT_MIN argument in kernel/signal.c:kill_something_info() allows for denial of service
CVE-2018-10124 kernel: Undefined behaviour with INT_MIN argument in kernel/si...
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:
Blocks: 1568206
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Reported: 2018-04-16 20:52 EDT by Sam Fowler
Modified: 2018-04-25 10:02 EDT (History)
45 users (show)

See Also:
Fixed In Version: kernel 4.13-rc1
Doc Type: If docs needed, set a value
Doc Text:
The Linux kernel has an undefined behavior when an argument of INT_MIN is passed to the kernel/signal.c:kill_something_info() function. A local attacker may be able to exploit this to cause a denial of service.
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Clone Of:
Environment:
Last Closed: 2018-04-23 07:15:09 EDT
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Sam Fowler 2018-04-16 20:52:09 EDT 
The Linux kernel has an undefined behaviour when an argument of INT_MIN is passed to the kernel/signal.c:kill_something_info() function. A local attacker may be able to exploit this to cause a denial of service.

References:

https://marc.info/?l=linux-mm&m=149667084508525&w=2

https://news.ycombinator.com/item?id=2972021

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4ea77014af0d6205b05503d1c7aac6eace11d473
Comment 3 Vladis Dronov 2018-04-23 07:15:09 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.
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