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Date: Wed, 30 Sep 2020 10:35:56 +1000
From: Wade Mealing <wmealing@...hat.com>
To: oss-security@...ts.openwall.com
Subject: CVE-2020-25641 kernel: soft lockup when submitting zero length bvecs.
Gday,
A flaw was found in the Linux kernels implementation of biovec usage. A
zero-length biovec request issued to the block subsystem could cause the
kernel to enter an infinite loop causing a denial of service. An attacker
with a local account can issue requests to a block device can cause a
denial of service.
This has been assigned CVE-2020-25641,
According to the fix commits "Introduced in":
# git tag --contains 1bdc76aea115 | head -n 1
v4.10
Fixed by:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124
Thank you.
--
Wade Mealing
Product Security - Kernel, RHCE
Red Hat
<https://www.redhat.com>
wmealing@...hat.com
<https://red.ht/sig>
TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>
secalert@...hat.com for urgent response
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