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Bug 617506 (CVE-2017-2671) - Kernel CVE-2017-2671 ping socket / AF_LLC connect() sin_family race
Summary: Kernel CVE-2017-2671 ping socket / AF_LLC connect() sin_family race
Status: RESOLVED FIXED
Alias: CVE-2017-2671
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Security
URL: https://bugzilla.redhat.com/show_bug....
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-05-04 18:24 UTC by Volkan
Modified: 2022-03-25 23:00 UTC (History)
0 users

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Runtime testing required: ---

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Description Volkan 2017-05-04 18:24:17 UTC 
A race condition, leading to a NULL pointer dereference, was found in the Linux kernel's Link Layer Control implementation. A local attacker with access to ping sockets could use this flaw to corrupt kernel memory leading to a kernel crash or privilege escalation. 

References:

http://seclists.org/oss-sec/2017/q1/675

CVE assignment:

http://seclists.org/oss-sec/2017/q2/17

Patch:

http://seclists.org/oss-sec/2017/q1/677

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=43a6684519ab0a6c52024b5e25322476cabad893

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43a6684519ab0a6c52024b5e25322476cabad893
Comment 1 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-03-25 23:00:37 UTC 
Fix in 4.9.26, 4.11