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(parent: ffbd663) | 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 08:32:51 +0000 (09:32 +0100)
commitcaf9b51829a50590b84daea924a0fd62d32bc952
treeb4019e6627eff42451d3238546341a9bd4a6f4eetree | snapshot
parentffbd663ebac9d32bac215bdd927268b22753a21ecommit | 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 | history
Domain: System / Kernel;