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 888D8515889 for ; Thu, 17 Sep 2026 16:37:09 +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=1789663030; cv=none; b=e70ug3a/BL1B7cm2C7RX1arpSZVOzPBLBMEytszZynVBtoQXUwx6VuKSIG/kPuvnSr9wtTP9fSc3WcZhsB9Y/2LY27i3U4IwDBMuVJiNerq9Sq9XiChQmc+eOazoNShOhMOAAtX/XD6Sj7AM0ZPbkcf08IlPcdKIjDO22s0ysv0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789663030; c=relaxed/simple; bh=MgtA258nVHtRyjSzM9NL987QI9E1I3SFZmWjXpKlX6Q=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=cIYWDgt78qJOUfEtAYXVp7n4HjwI8EXrnzwcdhqz1bY3ZfcUnN8k7XgKEP57597JUZ3OjHL5HF9zlCoMF+yoe69vPYklKfWoW999i4NMq4YeWPNRsAttw5z9D75STSsj3HBVk/GNOhP81E6LdnuyOrZe4eHvGHgPzxAAfOQWDo8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cffpCHj/; 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="cffpCHj/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C6441F00898; Thu, 17 Sep 2026 16:37:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789663029; bh=h7GwukxLvhuMAxw9GqCMRMVeMM3r8MLtgXlSWvPd6bk=; h=From:To:Cc:Subject:Date:Reply-To; b=cffpCHj/K7o/UDUCq3C7CXLIYhhn/vGn/74Ga+Z7qtJMmeyFDr13zsuOx38yrW2dc 4OA+eNn7L77zAy8voIDfPZE6mv916sHXmneNZYpiZ9p8bekzd4NerV0dS+63sFTge4 yAviHLr4TKjClbxg7bizfhn9uVCeXw2XIlW6H6iw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-93103: RDMA/hfi1: Preserve unit 0 on allocation failure Date: Thu, 17 Sep 2026 17:16:20 +0100 Message-ID: <2026091745-CVE-2026-93103-fb4e@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=3490; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=HgoS/KnMvkAoVmaafkHZOhIVSViWBRjL0gC9Q/AQ1Lo=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlrBE4ee3hw96M9exuZ4yVkzk2RLZk7r22ZyYtn2l0Wl 5LWviy07YhlYRBkYpAVU2T5so3n6P6KQ4pehranYeawMoEMYeDiFICJtAgwzBXzkM9K2vc5pWOt uLR9TOfs1S9mWjPMd5m/sd3x/IMX4dcE1Jtv6YZdmfJUDQA= 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: RDMA/hfi1: Preserve unit 0 on allocation failure hfi1_free_devdata() assumes that the device was inserted into the unit table and unconditionally erases dd->unit. If xa_alloc_irq() fails, the zero-initialized unit remains zero, so full cleanup can remove an unrelated device from index 0. Release only the rdmavt allocation and return immediately while the unit table has not acquired the device. The Linux kernel CVE team has assigned CVE-2026-93103 to this issue. Affected and fixed versions =========================== Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 5.10.270 with commit 852637d3ee56aed8ea3ee8948eda21eca406c051 Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 5.15.221 with commit 3d0e5252b8d0345ef494763ca31e3ddd666e02cb Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 6.1.188 with commit 0feb29d434e6cc0ebefec4f77be014c85ad751b0 Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 6.6.157 with commit 3f1e196eb66b8cd3882e373794d6cea46f150a20 Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 6.12.110 with commit 4ff9d58d34758e9633078b37e8d5289b513ff80e Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 6.18.52 with commit fd4d3ad5f244a867166d1e2da7ece3d82878ec81 Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 7.2.6 with commit 4204f5c0312ba136181a6e148ffa0bfaf95a4cc1 Issue introduced in 5.2 with commit 03b92789e5cfdac66805c1a98f1ec67336199d56 and fixed in 7.3-rc1 with commit 2e3809ad8911f5d5581b3f046bd628417bface76 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-2026-93103 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/infiniband/hw/hfi1/init.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/852637d3ee56aed8ea3ee8948eda21eca406c051 https://git.kernel.org/stable/c/3d0e5252b8d0345ef494763ca31e3ddd666e02cb https://git.kernel.org/stable/c/0feb29d434e6cc0ebefec4f77be014c85ad751b0 https://git.kernel.org/stable/c/3f1e196eb66b8cd3882e373794d6cea46f150a20 https://git.kernel.org/stable/c/4ff9d58d34758e9633078b37e8d5289b513ff80e https://git.kernel.org/stable/c/fd4d3ad5f244a867166d1e2da7ece3d82878ec81 https://git.kernel.org/stable/c/4204f5c0312ba136181a6e148ffa0bfaf95a4cc1 https://git.kernel.org/stable/c/2e3809ad8911f5d5581b3f046bd628417bface76