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 4914C397B1C for ; Sun, 18 Oct 2026 16:14:55 +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=1792340096; cv=none; b=TFwy+wN4Xp6fzWxv2O0a6h8GWI4lb1NYf7UTw2W7LU36OcLwr9TMyw8g138uv1VWH1JDBQvcuD9yhiRO9zhr7XS3crDeltK48j9GMLXwLCwP8hJMRueo87bf8CO4kYxqQRqr9ss9f6Zlgmzmz3FLlPL54TWwbAzlAY3Ph5u+IeU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792340096; c=relaxed/simple; bh=ntk9dVXZTgZm1lp5ugHG98cHZiZOlqQSGwGUj6dGSEc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=KKrNkyLKNfHBqL6tx7abNjZytMN6EcVjp/k+FN7H9b+A3B2o/keT1t70KDY3bh2mNKGUpL9QIWU8kkz6Dvc5rlh3e74kLNMysjJXCqGPNmzhmhisTj7O8Sxs/a1eP67P/QdxGeZHJRHkr8jHTf/1tF22QHGtrb6shl53gd/Omhg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=v8ej8e73; 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="v8ej8e73" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D7271F000C4; Sun, 18 Oct 2026 16:14:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792340095; bh=eMM8PEb19R3c6Zxha0mbv70RNodi0B0Es2nyXrA3heQ=; h=From:To:Cc:Subject:Date:Reply-To; b=v8ej8e73fr9w7Pe7PJMZZ0jZSVBsN7xm+/ToU7EWojHflEtQJnZ7bSjyi++9Tcd8E E8bKvpoi6+Sewv0OigjOmfrQa+4GzInmnF4mrKov6PxAEEzCFxnUSgJqxdfKssY69p OCN+PETJz2H5hCcguoBbDsgYIThRrCVFFMXXAOX0= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-98778: binder: fix is_failure flag for superseded transaction cleanup Date: Sun, 18 Oct 2026 17:45:53 +0200 Message-ID: <2026101820-CVE-2026-98778-ebd8@gregkh> X-Mailer: git-send-email 2.56.0 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=2874; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=ddjPDRj2jGqbbXqBNXERIjGQ3H5h8zxeYM/6ViX/nKg=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlXXobYLXk3NzSx6b0SR0WOey0P/7blBb43JinMviemu IlxfqZ9RywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEyE5zbDXJnYCf4WU6+/1Ehq lWOLTvlRIaS+jGHBvsPrFZ/d5rU775NUUx1aVP2Y895OAA== 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: binder: fix is_failure flag for superseded transaction cleanup When a TF_UPDATE_TXN transaction supersedes a pending async transaction, binder_release_entire_buffer() is called with is_failure=false. Since the superseded transaction was never delivered, binder_apply_fd_fixups() was never called and no fds were installed in the target process. With is_failure=false, the BINDER_TYPE_FDA cleanup handler interprets stale buffer contents as installed fd numbers and passes them to binder_deferred_fd_close(), closing unrelated file descriptors. Pass is_failure=true since the transaction was never delivered to the target, matching the semantics of all other undelivered-transaction cleanup paths. The Linux kernel CVE team has assigned CVE-2026-98778 to this issue. Affected and fixed versions =========================== Issue introduced in 6.0 with commit 9864bb4801331daa48514face9d0f4861e4d485b and fixed in 6.12.113 with commit 60a9f7323ae7318a7cce0d387c318da24f1e8726 Issue introduced in 6.0 with commit 9864bb4801331daa48514face9d0f4861e4d485b and fixed in 6.18.56 with commit 86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff Issue introduced in 6.0 with commit 9864bb4801331daa48514face9d0f4861e4d485b and fixed in 7.2.10 with commit 1ab671b50714ad8e359cf37eb041d8044319ccdc Issue introduced in 6.0 with commit 9864bb4801331daa48514face9d0f4861e4d485b and fixed in 7.3-rc6 with commit 22c135635fdd9816c0ef140d6de7b2e4fdf73e89 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-2026-98778 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/android/binder.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/60a9f7323ae7318a7cce0d387c318da24f1e8726 https://git.kernel.org/stable/c/86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff https://git.kernel.org/stable/c/1ab671b50714ad8e359cf37eb041d8044319ccdc https://git.kernel.org/stable/c/22c135635fdd9816c0ef140d6de7b2e4fdf73e89