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 90A143C3F42 for ; Mon, 10 Aug 2026 11:52:49 +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=1786362770; cv=none; b=cDehNzDA9InMami4/Bnx7oMG90XKjX4lWOgMfdTpE3WBm+pUMELpoyQgVS66cvRadIn3SGMOJFo6Uf20NdmeXVCsaw/XZcxbshEjDhj0rErlVd8M1AN90ktPLGIML8lEuCWcwed9OlifPn2wO2EAcKruFc6WF8F9NRV2NlZfoP4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786362770; c=relaxed/simple; bh=BQ6E1kFWNgQXV2NBges3dNSA06WCbN41F2Bub0AvGeg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=TAMFel53nVUV7NR+DdAR31IEVJBoWmjw9rUTaXIeA2copNyxaNmC56ldy6qjGIHIp1PwvXr6W9cwYaVAHpDbetC7MdoZynUu5gv9oSWXbqkvAqb1vwZPyU048FSMW/wKO6rVMz8ETt/idgu/ke7VuH5uNsq8MQ9xr5ve2nWdeuI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OZXolMG1; 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="OZXolMG1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A907D1F000E9; Mon, 10 Aug 2026 11:52:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786362769; bh=Vf7NT9no36SaG9S1vbJPvO7H4PNzJMSn+/H1EAbGly0=; h=From:To:Cc:Subject:Date:Reply-To; b=OZXolMG1djjrn27e73PqjaZ/ut37rkFh88pajpqT4GlqRmnB6p/z+Dz/E1gSMbnzV VcyViykKcj6nFhFYU0dTAoVLgKNGbRquqHOJrbyzkXc+0Cqrpy3qcsGKY64g8IvTFA TuqhsG1V0BufPZ8jv1X7N44An655wqnNiaEy1OXw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-68089: iio: core: fix uninitialized data in debugfs Date: Mon, 10 Aug 2026 13:51:00 +0200 Message-ID: <2026081059-CVE-2026-68089-0b5a@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=2202; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=Sz7HkNvhsdPlJtKno6SSYPkk3f5vnBlcruCQObzqW0Y=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmVu5Vvrl3eYWPxfNVZrqBnmW06Tq98+0+u4Ds+u9T9U TPHnYzKjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZiIzHOG+V4Z22bsqRSRC5c+ e8duPq/VEc9rOxjmGVxnY7JZe4C7r7C1e12E4LszIrNZAQ== 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: iio: core: fix uninitialized data in debugfs If *ppos is non-zero then simple_write_to_buffer() will not initialize the start of buf[]. Non zero values for *ppos aren't going to work anyway. Test for them at the start of the function and return -EINVAL. The Linux kernel CVE team has assigned CVE-2026-68089 to this issue. Affected and fixed versions =========================== Issue introduced in 6.15 with commit 6d5dd486c715908b5a6ed02315a15ff044a91025 and fixed in 6.18.39 with commit e166a8cfb28a3d0da260dd70cae274eb8c7cec8d Issue introduced in 6.15 with commit 6d5dd486c715908b5a6ed02315a15ff044a91025 and fixed in 7.1.4 with commit 89fbd3e32dffb6227f936a9578e6eb4632aa4580 Issue introduced in 6.15 with commit 6d5dd486c715908b5a6ed02315a15ff044a91025 and fixed in 7.2-rc1 with commit ab92ed206d41fd171ebd37bc46360d9f2140d043 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-2026-68089 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/iio/industrialio-core.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/e166a8cfb28a3d0da260dd70cae274eb8c7cec8d https://git.kernel.org/stable/c/89fbd3e32dffb6227f936a9578e6eb4632aa4580 https://git.kernel.org/stable/c/ab92ed206d41fd171ebd37bc46360d9f2140d043