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Date: Wed, 15 Apr 2020 23:50:51 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
Subject: CVE-2020-10942 Kernel: vhost-net: stack overflow in get_raw_socket
while checking sk_family field
Hello,
A stack buffer overflow issue was found in the get_raw_socket() routine of the
Host kernel accelerator for virtio net (vhost-net) driver. It could occur
while doing an ioctl(VHOST_NET_SET_BACKEND) call and retrieving socket name in
a kernel stack variable via get_raw_socket(). A user able to perform ioctl(2)
calls on the '/dev/vhost-net' device may use this flaw to crash the kernel
resulting in DoS issue.
Upstream patch:
-> https://git.kernel.org/linus/42d84c8490f9f0931786f1623191fcab397c3d64
Reference:
-> https://lkml.org/lkml/2020/2/15/125
CVE-2020-10942 assigned via -> https://cveform.mitre.org/
Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
8685 545E B54C 486B C6EB 271E E285 8B5A F050 DE8D
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