From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 39EBC14658D for ; Sat, 17 Aug 2024 09:11:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723885908; cv=none; b=OcbHz3uRFKlpb4FOmteuXLP8Xh6fK8GE673PfLR3LICbGtaSsKIxuezuG+OG7gDxvzmmcDs/yH9FvXZEdfREFX2Xfzg/ZRl1ZnNQdH1yn98c6EGqlj/fL/swNifV4AjXfSktlYrsPiUoynljRtVzHi1HfQptLBCQwOZzFBtimi8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723885908; c=relaxed/simple; bh=KBnLJOxqdtmIqS3FLLIF/boZ45O/KfCC6l30gsx7j3c=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=G/RTvvzKIB6kZeZSYYqWhBBcW1XJc2A77jdd93n89c/q9iX6Pkw9oNOBGioYS4v6vXWg6yWaoSTC24UqwyGR5gB4A7XKkIHo4Lblkv3hiYrH0nbIWwTErXNrvyONQGFRm9R9fXB04HQ9Ea7+Eb6Aq8CkZvGypm59p3tKhlQC/So= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bzddwEaK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bzddwEaK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C0A3C116B1; Sat, 17 Aug 2024 09:11:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723885907; bh=KBnLJOxqdtmIqS3FLLIF/boZ45O/KfCC6l30gsx7j3c=; h=From:To:Cc:Subject:Date:Reply-to:From; b=bzddwEaKJ16KPPriJ/t8H8//Ws8ncyt9AMRab8S84YIfV+JGAkUIKf4D8mowUB2Jm hamc9ejiVhJGFDYsOG+Fp1nRQimeskWJ1WkFEV4/EqhP2zfqQzt8YmcsxKeYT/qL+d JFpPLE22ncJinE97QtApQNTjhKMOPg9FYWzk5cDY= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-42282: net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling Date: Sat, 17 Aug 2024 11:09:47 +0200 Message-ID: <2024081743-CVE-2024-42282-85ea@gregkh> X-Mailer: git-send-email 2.46.0 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2269; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=KBnLJOxqdtmIqS3FLLIF/boZ45O/KfCC6l30gsx7j3c=; b=owGbwMvMwCRo6H6F97bub03G02pJDGkHMq5zFPzQvHGNc/7Cju31aUan7eb9DfcJZuY4fnw16 y6veymlHbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRHWwMC5qWn1aO0P3hsauB 4eiF95dOJb21vMkwP8+KK7hDof7Nu9VGTwIvGL/omtlgAAA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling Move the freeing of the dummy net_device from mtk_free_dev() to mtk_remove(). Previously, if alloc_netdev_dummy() failed in mtk_probe(), eth->dummy_dev would be NULL. The error path would then call mtk_free_dev(), which in turn called free_netdev() assuming dummy_dev was allocated (but it was not), potentially causing a NULL pointer dereference. By moving free_netdev() to mtk_remove(), we ensure it's only called when mtk_probe() has succeeded and dummy_dev is fully allocated. This addresses a potential NULL pointer dereference detected by Smatch[1]. The Linux kernel CVE team has assigned CVE-2024-42282 to this issue. Affected and fixed versions =========================== Issue introduced in 6.10 with commit b209bd6d0bff and fixed in 6.10.3 with commit af6bd5c9901b Issue introduced in 6.10 with commit b209bd6d0bff and fixed in 6.11-rc1 with commit 16f3a28cf5f8 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-2024-42282 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/net/ethernet/mediatek/mtk_eth_soc.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/af6bd5c9901b13a26eaf4d57d97a813297791596 https://git.kernel.org/stable/c/16f3a28cf5f876a7f3550d8f4c870a7b41bcfaef