[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <CALJHwhSuSiuK+gU07w1-MNoB1sW0XQwfpYCOzcXhky5K5Ynj9w@mail.gmail.com>
Date: Wed, 10 Jun 2020 21:21:03 +1000
From: Wade Mealing <wmealing@...hat.com>
To: oss-security@...ts.openwall.com
Subject: kernel: Multiple SSBD related flaws CVE-2020-10766 , CVE-2020-10767, CVE-2020-10768
A number of flaws were discussed in the registers article this morning
( https://www.theregister.com/2020/06/09/linux_kernel_bugs_spectre )
which have been submitted for inclusion upstream already.
Listed below are the CVE's that Red Hat has assigned. As far as I can
tell there are no existing CVE assignments for these flaws. I have
not done adequate investigation to correctly identify affected
versions of the kernel, however this is a flaw in the fix for
CVE-2018-3639, affected systems would likely be affected by the flaws
listed below if they required the fix.
CVE-2020-10766
- Rogue cross-process SSBD shutdown. Linux scheduler logical bug
allows an attacker to turn off the SSBD protection.
https://lkml.org/lkml/2020/6/9/181
CVE-2020-10767
- Indirect Branch Prediction Barrier is force-disabled when STIBP is
unavailable or enhanced IBRS is available.
https://lkml.org/lkml/2020/6/9/183
CVE-2020-10768
- Indirect branch speculation can be enabled after it was
force-disabled by the PR_SPEC_FORCE_DISABLE prctl command.
https://lkml.org/lkml/2020/6/9/184
The Red Hat Bugzillas for these flaws are
http://bugzilla.redhat.com/CVE-2020-10766
http://bugzilla.redhat.com/CVE-2020-10767
http://bugzilla.redhat.com/CVE-2020-10768
These bugzillas are a work in progress and will be updated as I get
more time to correctly input adequate information.
Thank you.
--
Wade Mealing
Product Security - Kernel
Red Hat
wmealing@...hat.com
TRIED. TESTED. TRUSTED.
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
