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 4BABD3822A3 for ; Sat, 15 Aug 2026 06:34:10 +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=1786775651; cv=none; b=gduR5uGvA18FbINzZx//1HFSb3XoDO8uoHEOBo0rvXonoBY2FHBNpJoqDne+ItT7rBTKuh36JvXMpwMzWqfTqyQg18FNd2ypsJrgE2U3ohVZDGX/mMEAlW2ahku8Ahm0/g4wMHAo5DD765PRmAwyePMTHAj1du7jyMTaf4pb5iA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786775651; c=relaxed/simple; bh=5YEFVNBi9rftnTCNwEw54f4ajh2YNp6JgIplW1oPk9s=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZHvKa2FgbsKooLs35jxUKzX3ttGM3ZPMCU6f1p1U9ZCzSsI0Hwu0as5REA0bUqBLNYE+nHpPOkmpdxZFE9PHnNrf8Q9lzEg9rpr4DiGb6OZvULRewA9ks2KuBI0iyi5oodpogwRyaJl0ylC6+ZxlrCwweWB04CL/HbNzkCkj8Eo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2ez8x0NF; 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="2ez8x0NF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A12F51F000E9; Sat, 15 Aug 2026 06:34:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786775650; bh=i0SSPSGcCeEDnrkafaBGOIIprb8FTXDjIVip8zVrRDQ=; h=From:To:Cc:Subject:Date:Reply-To; b=2ez8x0NFUpYVZLcP8hmkbTFKVOsNcpn9dRA8bt6G7ev10DHDg16xWz3S/LMyiCBDR 9Z49gNk7cw/UcUUHqqDNeNYzDuDO8oC6NJXqIKy6crLkpOS6MVlYIVn1VBP6Peuhma sI5k9EzetT1b1n4raBLl8ec4kAjFUvIlH6qAoHeQ= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-74309: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler Date: Sat, 15 Aug 2026 15:10:36 +0900 Message-ID: <2026081551-CVE-2026-74309-ec50@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=2195; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=Y10baVleYVLr7TqfNn0hKOq3HwFFewZNbu6vC6Gr10I=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNjNxXReLu6AcvOd4YIZpjyropOFDiWPgbrv2Bczk49 86Z9P9HRywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEzE+gnDXCn7Y9brj75UNLaW j5ErONlbpeHkyzC/xmIL5y/Djov9Wy/unnw8L5uVobEDAA== 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: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler Look up the IRQ index in oct_hw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not the base. The Linux kernel CVE team has assigned CVE-2026-74309 to this issue. Affected and fixed versions =========================== Issue introduced in 6.14 with commit 26f8ce06af6475b33b0bc60261e9f5027f9af58f and fixed in 6.18.40 with commit 3ef0cfa77a3d526591be069850d186c255e3f0cc Issue introduced in 6.14 with commit 26f8ce06af6475b33b0bc60261e9f5027f9af58f and fixed in 7.1.5 with commit c6c7eae5de798442987619434171ac886035d57c Issue introduced in 6.14 with commit 26f8ce06af6475b33b0bc60261e9f5027f9af58f and fixed in 7.2-rc1 with commit 0d21a1d6375a05274291e32c1ab7cd57dbb69513 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-2026-74309 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/vdpa/octeon_ep/octep_vdpa_main.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/3ef0cfa77a3d526591be069850d186c255e3f0cc https://git.kernel.org/stable/c/c6c7eae5de798442987619434171ac886035d57c https://git.kernel.org/stable/c/0d21a1d6375a05274291e32c1ab7cd57dbb69513