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 576B54A6CC2 for ; Thu, 24 Sep 2026 15:56:17 +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=1790265379; cv=none; b=bk3N/9ATXttJ8A8x7VMYxYjQIySWFX01WXca5VtFq+sCeg8UOMGQKuWriRqqyxT4KSDwB9Q1kTFjL4TRRnGJu4JbOPsRXYh/ZtiMv+21KI5wRQ9QeHWwk2KrhWsesJ1bxtFh5cYC9GbSwaTwwLdksg+py4or2eSDNqyQkR2s2MM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790265379; c=relaxed/simple; bh=yOw60PJ33vb2spsEYWs3HrJhCgQTm9mj8tebcj/2CDw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=AenDx6DLNaNJLQ3z6QTsDfDfCwa5e9bZfZjjmYukz1oJQgIyVCY/4/n3OyNL2HylggW7YW1HWfeTUzA2lAwU10htdhVWF+uXNvggs/oaW/FjCTkRrWuBiX3TIMWmwU1sbKcv0YySrnA0lnuRetguMRYdjLTz+S4rL+LaBsdT5LQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NKo+H/wo; 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="NKo+H/wo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 794851F000FF; Thu, 24 Sep 2026 15:56:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790265377; bh=7sl1QTeeGUavPepvRW6yHJ2RhUJFOaLPuKbQgl3c04E=; h=From:To:Cc:Subject:Date:Reply-To; b=NKo+H/woGkrI9ZRisrc8UF4Lpvc2cKbVvESy82Uk4W7XtrBWS92wOAK1yoPSzNoin zeQp+ImcEA0tvR6/ldW8WNp1ONN/BOjM9n10ZiQyvtGgjrlALkge3uDhqreE7k+BLB R66HmWYvTd7B52D4nSFrUoWrQlKmyafEMGRuo39Y= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-93278: staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown Date: Thu, 24 Sep 2026 17:51:38 +0200 Message-ID: <2026092413-CVE-2026-93278-e174@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=3341; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=qHqe1v1RMhsfCBQbTziyi1QJEVVVBt4If/EKqtkpjNw=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlb3T4afXgvtfHVqzX7686uiZzP+zHhwf0HzM4bHZfZz 2mojF3Q2xHLwiDIxCArpsjyZRvP0f0VhxS9DG1Pw8xhZQIZwsDFKQAT+b2cYX5YCbfujKOG23fP 6F9n/VK2cnF/iQjD/KxzdzSXBx979MFZt9T2UZb7nH/7uAA= 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: staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown cvm_oct_rx_shutdown calls free_irq and netif_napi_del without disabling the napi instance first. As the free_irq only waits for completion of hard interrupt handlers, the napi poll function could still be active. If cvm_oct_remove proceeds to free the plat structure (which holds the NAPI instances), the active poll function will access freed memory, resulting in a use-after-free crash. The Linux kernel CVE team has assigned CVE-2026-93278 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 5.15.221 with commit 158389d7af04bbf0664d91c2ce31fcc9eeace1eb Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 6.1.188 with commit c124049c3a7006fd6caf629139a5722610bbffb4 Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 6.6.157 with commit 98f9036b2254c928cb44da0c77dba38f66f7d8f1 Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 6.12.110 with commit b38fbd68cc36b4f478a1e3cfc169b8616ae1337d Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 6.18.52 with commit 89f9f433271fad9351de6a3c713b45b2cfb23e4a Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 7.2.6 with commit b2243ffaac14cc3639b5b32a371aac37f96ee554 Issue introduced in 2.6.34 with commit 3368c784bcf77124aaf39372e627016c36bd4472 and fixed in 7.3-rc1 with commit c0a9a8586a63fda49e61a6b83360feac2a60d898 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-2026-93278 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/staging/octeon/ethernet-rx.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/158389d7af04bbf0664d91c2ce31fcc9eeace1eb https://git.kernel.org/stable/c/c124049c3a7006fd6caf629139a5722610bbffb4 https://git.kernel.org/stable/c/98f9036b2254c928cb44da0c77dba38f66f7d8f1 https://git.kernel.org/stable/c/b38fbd68cc36b4f478a1e3cfc169b8616ae1337d https://git.kernel.org/stable/c/89f9f433271fad9351de6a3c713b45b2cfb23e4a https://git.kernel.org/stable/c/b2243ffaac14cc3639b5b32a371aac37f96ee554 https://git.kernel.org/stable/c/c0a9a8586a63fda49e61a6b83360feac2a60d898