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Thu, 08 Oct 2026 12:16:30 -0700 (PDT) Received: from localhost.localdomain ([2603:8001:5f01:8bab:bc88:5ec1:4f8a:5b23]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3537cacb5e9sm54053eec.20.2026.10.08.12.16.29 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 08 Oct 2026 12:16:30 -0700 (PDT) From: Artem Dinaburg To: stable@vger.kernel.org Cc: Artem Dinaburg , Greg Kroah-Hartman , Sasha Levin , Sudeep Holla , Sashiko , Sudeep Holla , Cristian Marussi , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, arm-scmi@vger.kernel.org, viresh.kumar@linaro.org Subject: [PATCH 6.6.y 0/2] firmware: backport CVE-2026-93083, CVE-2026-93093 Date: Thu, 8 Oct 2026 15:16:19 -0400 Message-ID: <20261008191624.98532-1-artem@trailofbits.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261008_121634_213916_E8BE775D X-CRM114-Status: UNSURE ( 8.96 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Greg, Sasha, and maintainers, I'm working through the smaller CVE backports still missing from 6.6.y. These 2 upstream changes belong together for CVE-2026-93083, CVE-2026-93093. They must be applied in this order because the later change depends on or completes the earlier one. The complete series is already present in 6.12.y, 6.18.y, and 7.2.y. Patch 1 also affects 6.1.y and will need a separate backport; this series contains only the 6.6.y patches. Could you please consider this series for 6.6.y? Thanks, Artem Dinaburg Series: 1. firmware: arm_scmi: Publish channel state before callbacks 2. firmware: arm_scmi: Unwind TX receiver mailbox setup failure base: v6.6.157 (79643295eba17affbd16ca97f3ef04c90266b28c) plus stable-queue revision 958ddf240a33ef26b1771be944f0ea6c3b597472