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(parent: 76ec7fe) | patch
xen/blkfront: harden blkfront against event channel storms
authorJuergen Gross <jgross@suse.com>
Thu, 16 Dec 2021 07:24:08 +0000 (08:24 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 22 Dec 2021 08:30:59 +0000 (09:30 +0100)
commit8ac3b6ee7c9ff2df7c99624bb1235e2e55623825
treeeb998aaaf686df16399d5ff6942a7ded5e16b48etree
parent76ec7fe2d866b1299f759e0eb87443b03fced0adcommit | diff
xen/blkfront: harden blkfront against event channel storms

commit 0fd08a34e8e3b67ec9bd8287ac0facf8374b844a upstream.

The Xen blkfront driver is still vulnerable for an attack via excessive
number of events sent by the backend. Fix that by using lateeoi event
channels.

This is part of XSA-391

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/block/xen-blkfront.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)