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b=XAe1nXq1yah2LK2sf0rVIjpQ15RaIMRa0UthgpmZrUNGq5iKeb5RfJcT+Prq2NVrc 4rslOiIrw1X11cJSzL3WKoMKvrNSRtDMPF/deh5GrrZLES4+ooFbhX8Z38ffb56fro AWk49ApoO7l/oDK0mgU7LmfF7nNy7FB1O3W4u+wlMSWFWbBSlh9xbDuRJjzaLVE64V 5q/2tSS07y3tMJYf5BFZwxO3tqidg6KF0DTBCRVys5PkiaFrRjPZy2fFoqmC/V+BGO bsQPXzSy7Ge0hQTM9MJdBG9meo30UeJZFy20X6Kr7GZJ5vQlzot0MElRsR98B6DPvC 1xvf0xCcvh+hg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 748BD383BA3C; Fri, 18 Jul 2025 15:00:08 +0000 (UTC) From: Ali Polatel via Bugspray Bot Date: Fri, 18 Jul 2025 15:00:10 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: akpm@linux-foundation.org, linux-mm@kvack.org, bugs@lists.linux.dev Message-ID: <20250718-b219227c6-9e9c2516da7c@bugzilla.kernel.org> In-Reply-To: <20240912-b219227c0-78bee9e213fc@bugzilla.kernel.org> References: <20240912-b219227c0-78bee9e213fc@bugzilla.kernel.org> Subject: Re: MDWE does not prevent read-only, executable, shared memory regions to be updated by backing file writes X-Bugzilla-Product: Linux X-Bugzilla-Component: Kernel X-Mailer: bugspray 0.1-dev X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: D517B100006 X-Stat-Signature: c353fjybtm8bpe7ekrnsyf4t9otaefxn X-Rspam-User: X-HE-Tag: 1752850788-197502 X-HE-Meta: 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 7fkjU244 JXE0Jitm5be9VgEj1MERB//auDR8fTBmIXGigiF+7xYYjoFju7JPKUEdJVXkWBZk+jyS2axWI9exSqNUukKsO0Xuaym9tLzTYB4EsgcPqd8GdF+LSkyg0qQuyYPPi9600oxzMiSZjrxe1Ne5l4MYoVKXCVPI0qesAyyIqicaGIZH0QHFoKwHVTwgQHlnPKZyANrkLQ2d76Lf5ISDnUn7np5QbqnjAo8Jp42T4peKtEYcFPmRzNRsDpRDaEbuhKxDnz14PMu3GldC5sWZ308ZFWXrJzNi8tTsM+jNKP9xbs6ylGaKqYGUZDkDdmGJCnm19UKd0BnSla4zYtbhYN4658nf5xy1wbGftBMjAKRdsHRnR8EE= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Ali Polatel writes via Kernel.org Bugzilla: As of version 3.37.0, Syd sandbox mitigates this by a proactive file writability check prior to mapping PROT_READ|PROT_EXEC mappings when memory restrictions are on, you may find more information in the last paragraph of https://man.exherbo.org/syd.7.html#Memory-Deny-Write-Execute_Protections View: https://bugzilla.kernel.org/show_bug.cgi?id=219227#c6 You can reply to this message to join the discussion. -- Deet-doot-dot, I am a bot. 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