From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 288C33E314B for ; Fri, 8 May 2026 13:14:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778246092; cv=none; b=ARbS7CM/4QRQGdmrZIp/9h593jBaRjdjyKgi1e971JPHWA6jFBbK47ns2Y0NeH0GXaeBCmJd14Im4l1tib4+JhKU4RoFE1skpTm3j5sFCr8ybKnEBQK+Oz8JL0m5ZlKPKusqnSbsN43yYbiYGMYNJ6cI7RQlzFTvVYchAEfC6T4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778246092; c=relaxed/simple; bh=6kfVpvSRihVGdYMGp4olhYrx7+C+sTAiLlUKxkjHXzQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=DiEAXRIOeDXrgJcsIPrKJMEiKNkwu8XIupe8eOq0qdMk+P7dv+R21JbP/FFQCgNaX9SgAnB/YB9U5DZGAH4+nLiHVD/8XSPgnd4Bat6y98/tZcIbyEsJF9/u+GPgrDT4RI8xUOR/AQPDWqvpx/ETbR+7i2GM7j4VBmqSmO0r80U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sHzKmaEz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sHzKmaEz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0D60C2BCB0; Fri, 8 May 2026 13:14:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778246092; bh=6kfVpvSRihVGdYMGp4olhYrx7+C+sTAiLlUKxkjHXzQ=; h=From:To:Cc:Subject:Date:Reply-To:From; b=sHzKmaEzWRwgbZReuBQgqAONB1VzRpsw537hyTFaY5hMx9Ra0Yv+wiFr5k6Y7nUnI k9lVusVwE9olnE0laEYJ+LGa6rdAml6cyvqasi22IJF+XllzxGgHcgpBVHwkc8927h Sq5ZYEH8ei0Hw/zUIX8dhfirCH1LXGyhyIxaNJZ0= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43311: soc/tegra: pmc: Fix unsafe generic_handle_irq() call Date: Fri, 8 May 2026 15:12:16 +0200 Message-ID: <2026050800-CVE-2026-43311-e5d9@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2848; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=lSlB2kRD7muoi1LRf/yA+2M16sVk8vKBnASwBYPGs7Q=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/Hyo84G+e1fQkIu6o3iz2e4dmHejJvsx8WulKQNoxY 9aF0TtNO2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAijhcY5vtdkLD9wCPhdPzX vxfTTkSsnnf4/FeG+aEXBRVs0sTlXzOEzwhvOXRB/7+FBwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: soc/tegra: pmc: Fix unsafe generic_handle_irq() call Currently, when resuming from system suspend on Tegra platforms, the following warning is observed: WARNING: CPU: 0 PID: 14459 at kernel/irq/irqdesc.c:666 Call trace: handle_irq_desc+0x20/0x58 (P) tegra186_pmc_wake_syscore_resume+0xe4/0x15c syscore_resume+0x3c/0xb8 suspend_devices_and_enter+0x510/0x540 pm_suspend+0x16c/0x1d8 The warning occurs because generic_handle_irq() is being called from a non-interrupt context which is considered as unsafe. Fix this warning by deferring generic_handle_irq() call to an IRQ work which gets executed in hard IRQ context where generic_handle_irq() can be called safely. When PREEMPT_RT kernels are used, regular IRQ work (initialized with init_irq_work) is deferred to run in per-CPU kthreads in preemptible context rather than hard IRQ context. Hence, use the IRQ_WORK_INIT_HARD variant so that with PREEMPT_RT kernels, the IRQ work is processed in hardirq context instead of being deferred to a thread which is required for calling generic_handle_irq(). On non-PREEMPT_RT kernels, both init_irq_work() and IRQ_WORK_INIT_HARD() execute in IRQ context, so this change has no functional impact for standard kernel configurations. [treding@nvidia.com: miscellaneous cleanups] The Linux kernel CVE team has assigned CVE-2026-43311 to this issue. Affected and fixed versions =========================== Fixed in 6.19.6 with commit 64016227dcdb968b7030eda04304f3d0df5d209d Fixed in 7.0 with commit e6d96073af681780820c94079b978474a8a44413 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-43311 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/soc/tegra/pmc.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/64016227dcdb968b7030eda04304f3d0df5d209d https://git.kernel.org/stable/c/e6d96073af681780820c94079b978474a8a44413