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 87A5B371D02 for ; Sat, 15 Aug 2026 06:23:08 +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=1786774989; cv=none; b=CvDdzigRFiUjJxyjaOFDULnPt1TUSFt+NZ/nwlrdrifFwLoeVH9yBGz2+fLolw58KdqHt0QQAgtF/HlayM7j+RFuOXYI5XpHYZd2f5FLg3vIlgzDFgBnHgSslVZAxVNd+94Hi1m/HWHO0lGlK2+uJhTKP+c1HoErqPmMDFtotJw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774989; c=relaxed/simple; bh=is0WC1cWF7yRJJsZyFH6pIr1fSksTVAJhdPoQny/8D0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=b23UlYNWeGaLYk5glaOGlEO9mYsuyNY7GJ3poeC/On/R1tHC/lhJT1uMtPDaXI9zgqQvfHnJ9tB4dYK0jBKHFChYUSSRLYjwH3Gf55tGitQjYiw0FfMgcTSx9yoz4CkOfdhgKia4dgeFAeVoV+Z5GYYk5+TxLcl9ncUWwZK4h60= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=BNkg6qLE; 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="BNkg6qLE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B4321F000E9; Sat, 15 Aug 2026 06:23:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786774988; bh=lstCB+j4rMcj3hBZEyB4ZybTx/tnNl8utY+KdJioNXQ=; h=From:To:Cc:Subject:Date:Reply-To; b=BNkg6qLEvzPCtCuDy+wiCe+3WAsM4vkYJ9X7QLiyN8mQGuv4/zqIsOG8uCcNRVzJg 7tYRmYJFhcP1lP0+OOgINERfsRyX4+CHJ9YvxjM4kvsLSBGn0ptg7d038Q0c1SBmJw Rn1e/UgHZstm19xVDFNGaAJlrsaPw+a8QNqgCudM= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72298: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post() Date: Sat, 15 Aug 2026 15:06:17 +0900 Message-ID: <2026081502-CVE-2026-72298-9cab@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=3971; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=ugsr+cIurGYIRWt6MWWk4DjecsB1rz6+k0kGeOCHKIw=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDLdWCkp92Ldw7fEVbQkThY8YmRY8v//rYBiDxIWlM yakhz5064hlYRBkYpAVU2T5so3n6P6KQ4pehranYeawMoEMYeDiFICJPG9lWNDDFbcwpqQ4YycD J2fB5T1rnsW3/2FYsFwsfNNj11mhwhe6l1+yX/dUYu4PbQA= 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: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post() qrtr_endpoint_post() validates an incoming packet with if (!size || len != ALIGN(size, 4) + hdrlen) goto err; where size comes from the wire. On 32-bit, size_t is 32 bits and ALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check passes and skb_put_data(skb, data + hdrlen, size) writes past the hdrlen-sized skb and oopses the kernel. 64-bit is unaffected. This is the 32-bit residual of ad9d24c9429e2 ("net: qrtr: fix OOB Read in qrtr_endpoint_post"), which fixed only the 64-bit case. Reject any size that cannot fit the buffer before the ALIGN. The Linux kernel CVE team has assigned CVE-2026-72298 to this issue. Affected and fixed versions =========================== Issue introduced in 5.10.46 with commit 960b08dd36de1e341e3eb43d1c547513e338f4f8 and fixed in 5.10.261 with commit 3665e644ea081c4624a1637023b0de3b29f4ae04 Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 5.15.212 with commit b609f7f46916c6b05585ca82455077198a23770f Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 6.1.178 with commit 242408b5b763c01288adf3113cbce84378a76e1a Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 6.6.145 with commit d0597074e99731fdad5593e4f6d056a3866f2cab Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 6.12.97 with commit 689b7267f8632b4661879dc323e26ebb60978afb Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 6.18.40 with commit 22100a8f73d4ae4f17697dae93d4e2e1d283a6ec Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 7.1.5 with commit 7f72c285f6d3bf63968a0344beee8ab1b370198b Issue introduced in 5.13 with commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d and fixed in 7.2-rc1 with commit 20054869770c7df060c5ecee3e8bbf9029c47191 Issue introduced in 4.19.196 with commit f8111c0d7ed42ede41a3d0d393b104de0730a8a6 Issue introduced in 5.4.128 with commit 26b8d10703a9be45d6097946b2b4011f7dd2c56f Issue introduced in 5.12.13 with commit 19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe 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-2026-72298 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: net/qrtr/af_qrtr.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/3665e644ea081c4624a1637023b0de3b29f4ae04 https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191