linux-kernel - locks use-after-free stable request

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Date:   Tue, 24 Mar 2020 07:24:49 -0700
From:   Mark Salyzyn <salyzyn@...roid.com>
To:     stable <stable@...r.kernel.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: locks use-after-free stable request

Referencing upstream fixes commit 
dcf23ac3e846ca0cf626c155a0e3fcbbcf4fae8a ("locks: reinstate 
locks_delete_block optimization") and commit 
6d390e4b5d48ec03bb87e63cf0a2bff5f4e116da ("locks: fix a potential 
use-after-free problem when wakeup a waiter") and possibly address 
CVE-2019-19769.

Please apply to all relevant stable trees including 5.4, 4.19 and below. 
Confirmed they apply cleanly to 5.4 and 4.19.

Signed-off-by: Mark Salyzyn <salyzyn@...roid.com>

Cc: stable@...r.kernel.org

Cc: linux-kernel@...r.kernel.org

Cc: kernel-team@...roid.com