From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 65D763D16E6 for ; Mon, 10 Aug 2026 12:11:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786363892; cv=none; b=K8kMVbbvQ3S7Veny1PTQSQkTJICc2G0CfYocm+2a0+2qeW1vvHGxVP3fdtodvl77iXKkKn4CFHMA2tfb3m3bzN+HHkmU70DbBGcI0+s6Tbz0x2U0R/8s9pUndobSY3w2zkv9jBVQ8slybOvf1d7ncYu6pyru6AgS6/j+SozBY1Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786363892; c=relaxed/simple; bh=/9/AIgARjbOIo9Knt6l21pdAQMMKFLn9tBJOZNAe2+A=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=QT2DH+na6hs8gVZgsSWQX95iHM/iUiJw++tVtTFlh+9v0bHSs5wBCCcgOukeeh8lQLIXJ8yz0/PIZXE39uh1f6tU05hdocwz3Le5WNiUDCNZv0Av7Ct0v0g+8rLNP2KVyTTnT3EBXRq3noqRhmHKxIzo/6r98OHXhMLrowNhoZY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=N9H1JhCw; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="N9H1JhCw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DC2F71F000E9; Mon, 10 Aug 2026 12:11:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786363891; bh=IvY4wKkZWCfNcnsHP35l92YPHabAGUg8fHoxV5P3gdI=; h=From:To:Cc:Subject:Date:Reply-To; b=N9H1JhCwCKomzUiY4edZ7m839sBq3tqAy9IK2IT+dSYuWjXPQj1szGIxCOdXJL4r7 NFXjOPdxRcwiO3fV4V+S87kkVRDi20W74ZJ5MYfSz2N5L6IdCbTZwk/oae5mytqTqF zjonTvJfl9OHS/w0s6QiydFNIcjvArxxaihQLMS4= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-68346: ALSA: hda: cs35l41: validate and free ACPI mute object Date: Mon, 10 Aug 2026 14:01:03 +0200 Message-ID: <2026081038-CVE-2026-68346-7dd6@gregkh> X-Mailer: git-send-email 2.55.0 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=2908; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=/l4S3i5M8wnRiBRli81n3RGL4CTS92bT6FQBNmIdM4w=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmVezbxbn1mveZZ9fO4B36zYjfvWj/h63aJI1sX1Tvct 3o79fuSVx2xLAyCTAyyYoosX7bxHN1fcUjRy9D2NMwcViaQIQxcnAIwEVFphvkJt0MPtz2ayOZo 9Sj9pnqpSPTUs7MY5leInLN89G4LT4T5hNsbl4ixva5cPg0A 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: ALSA: hda: cs35l41: validate and free ACPI mute object cs35l41_get_acpi_mute_state() evaluates a _DSM method to get the ACPI mute state and reads the first byte from the returned object. However, the returned ACPI object is owned by the caller and is never freed after use, so each successful query leaks the _DSM result object. The code also assumes that the returned object is a buffer with at least one byte. A malformed firmware response can return a different object type or an empty buffer, and the direct ret->buffer.pointer dereference can then access an invalid pointer. Use the typed _DSM helper, validate that the returned buffer contains at least one byte, and free the ACPI object after reading it. The Linux kernel CVE team has assigned CVE-2026-68346 to this issue. Affected and fixed versions =========================== Issue introduced in 6.7 with commit 447106e92a0c86c332d40710436f38f64c322cd6 and fixed in 6.12.101 with commit 7fea0c89ed39a13d9a31163a74f8c62de30a4ffc Issue introduced in 6.7 with commit 447106e92a0c86c332d40710436f38f64c322cd6 and fixed in 6.18.42 with commit 08433c71f15984ddd5f5a307cf3f0aa9b84583aa Issue introduced in 6.7 with commit 447106e92a0c86c332d40710436f38f64c322cd6 and fixed in 7.1.6 with commit d5dfdf43259ad9d054052012095b1630e7366dcf Issue introduced in 6.7 with commit 447106e92a0c86c332d40710436f38f64c322cd6 and fixed in 7.2-rc5 with commit 3b597d24dc0455ae926f1053f97c2725038fc3cd 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-2026-68346 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: sound/hda/codecs/side-codecs/cs35l41_hda.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/7fea0c89ed39a13d9a31163a74f8c62de30a4ffc https://git.kernel.org/stable/c/08433c71f15984ddd5f5a307cf3f0aa9b84583aa https://git.kernel.org/stable/c/d5dfdf43259ad9d054052012095b1630e7366dcf https://git.kernel.org/stable/c/3b597d24dc0455ae926f1053f97c2725038fc3cd