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Message-ID: <CAAeHK+wzhV4PBENUzD5SeCp_vjtT84B-ER+cWU9=FvZxfavJhw@mail.gmail.com>
Date: Tue, 30 May 2017 21:12:40 +0200
From: Andrey Konovalov <andreyknvl@...gle.com>
To: oss-security@...ts.openwall.com
Cc: idaifish@...il.com, Dmitry Vyukov <dvyukov@...gle.com>,
Kostya Serebryany <kcc@...gle.com>
Subject: Linux kernel: CVE-2017-9242: out-of-bounds write in __ip6_append_data
The following CVE was assigned for an out-of-bounds write in IPv6
socket buffers.
The bug was found with syzkaller.
* CVE-2017-9242
The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux
kernel through 4.11.3 is too late in checking whether an overwrite of
an skb data structure may occur, which allows local users to cause a
denial of service (system crash) via crafted system calls.
CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9242
Fix: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=232cd35d0804cc241eb887bb8d4d9b3b9881c64a
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