617512 – (CVE-2017-5970) Kernel CVE-2017-5970 Invalid IP options could cause skb->dst drop

Bug 617512 (CVE-2017-5970) - Kernel CVE-2017-5970 Invalid IP options could cause skb->dst drop

Summary: Kernel CVE-2017-5970 Invalid IP options could cause skb->dst drop

Status:	RESOLVED FIXED

Alias:	CVE-2017-5970

Product:	Gentoo Security
Classification:	Unclassified
Component:	Kernel (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Kernel Security

URL:	https://bugzilla.redhat.com/show_bug....
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2017-05-04 18:38 UTC by Volkan
Modified:	2022-03-25 23:01 UTC (History)
CC List:	1 user (show)

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Runtime testing required:	---

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Description Volkan 2017-05-04 18:38:18 UTC

A vulnerability was found in the Linux kernel. A remote attacker that can send packets containing malicious IP options could cause the ipv4_pktinfo_prepare() function to drop/free the dst. This could result in a system crash or possible privilege escalation if the attacker is able to place crafted objects in this dropped location.

Upstream patch:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b2cef20f19c87999fff3da4071e66937db9644

References:

http://seclists.org/oss-sec/2017/q1/414
https://patchwork.ozlabs.org/patch/724136/

Comment 1 John Helmert III archtester

2022-03-25 23:01:20 UTC

Fix in 4.9.11 onward