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 1B5D53876C3 for ; Sat, 15 Aug 2026 06:40:53 +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=1786776054; cv=none; b=Ez+mQuJnCdk89KNdjuEP7Ut8ZU5tj2SuWfv9bpXqlw+q/iy7nXFCOBtCfxpNIulsrLkoMMaNykbOUYHsTDgq8fPnoyltMufmN1U6EE7XEDY0D6JREqimuj10y8kRsFm41jPyGebNShtzPCb/CVuJ6jLZTNyfiYxoBFitMsy9cAE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786776054; c=relaxed/simple; bh=g4fd04E2MsNBllrEwbtKjiBqHp0RVQsDuQq9IN0P9v4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=e5DyXZK/BIBVggIavMruOQgIclutTw/Ryl++6OhnFaK7WehsZ39EjRVRqGi0IK9cpeQBZIra8+rwYEjwTyM9PQ3UnVVCxpi/TzTjl0By3s2C0iTLWQQnUjdx7eHwrb1XUVeQipNlDnorOnYcvXIyJD6ZsgYGrqAyn7x1AF+AId0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=1vg9/GoC; 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="1vg9/GoC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 657621F000E9; Sat, 15 Aug 2026 06:40:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786776053; bh=nnjiwC0/mnw/6zKE5J2Biut0Fhel4LDocY7D/SBSQSw=; h=From:To:Cc:Subject:Date:Reply-To; b=1vg9/GoCvJNIBoIbt2A+ShmqtkWV5MPv+kwpK9e47j4NgDCGaZcxN/C3V5gAfRukK wHaL0EW2etddDTrzjye5iW7ffPVZCpIR6SNlDMdPtWCyJluZZgvae4HzqmjMnCepwU riW4KWVjtyk9sN5GZUb0hZl8DkEnj2zV4MxLzI4Q= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-74423: accel/amdxdna: Fix leak when pinning ubuf pages Date: Sat, 15 Aug 2026 15:12:30 +0900 Message-ID: <2026081513-CVE-2026-74423-8ed6@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=2216; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=1ZsalJnYB07XenKhKpcSzwsyVsT7zFaN9OMU6pyLeGE=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNjIoFDls1HNf5XHioxXZoR7irpr7k548xnaXngiu3L fS5v76+I5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACaS+Ythvt8258hJ6zjyTd9v Kt9yqJLhzmdXToYFU5bWiURyNt6eseGbz1ZPtvksST7iAA== 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: accel/amdxdna: Fix leak when pinning ubuf pages When pin_user_pages_fast() returns fewer pages than requested, the pages that were successfully pinned are not released, leading to a leak. Fix this by unpinning any partially pinned pages before returning failure. The Linux kernel CVE team has assigned CVE-2026-74423 to this issue. Affected and fixed versions =========================== Issue introduced in 6.18 with commit bd72d4acda1069579b35123e3cc0b21ec1193a21 and fixed in 6.18.40 with commit 68dc52f308a17c3103a349f722dd5dea32c50a88 Issue introduced in 6.18 with commit bd72d4acda1069579b35123e3cc0b21ec1193a21 and fixed in 7.1.5 with commit 5b24e0903c58cdfd8ebfecb6ac5c5bacfd06e4e7 Issue introduced in 6.18 with commit bd72d4acda1069579b35123e3cc0b21ec1193a21 and fixed in 7.2-rc1 with commit d946347edc4f0a7b846325323d77e936a4c90d0f 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-2026-74423 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/accel/amdxdna/amdxdna_ubuf.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/68dc52f308a17c3103a349f722dd5dea32c50a88 https://git.kernel.org/stable/c/5b24e0903c58cdfd8ebfecb6ac5c5bacfd06e4e7 https://git.kernel.org/stable/c/d946347edc4f0a7b846325323d77e936a4c90d0f