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 90A0846D093; Tue, 21 Jul 2026 18:12:56 +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=1784657577; cv=none; b=VSZifpFKhRmV1v/QKDDLWJkmzCGCUwSAnl6raBItO5JeHEKEXfSaGH2ZNLNw9y0w9vblKPnpYYoFYiDTmnzuigodiw+wV7miE9DNBx69BXUUWZiImJqbaMF3BtBFUGwZOxd42PWxVXcXsjJmJv8g+lqK0d9azEr5aZ8VBlWXgS0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784657577; c=relaxed/simple; bh=C9jXlBSq6Ha8FmIDvhAklBpdKYVuDhUQ6khvrrDhJUQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=l982kmqmc5o/Fcel+T/VFDdd17UJ6V+dEuZTFqbnu6j9l65C82UM/npwMF4XFApgKJPGgIvIFT2ESBYny9NaqZ6pG63J2i5ZACR3SfBsNI8WrpP5J9wI1gj3LlC1ytk/U0U+m8YbzV3iojCYfXRnNAmhiYZrrvgwaZso5sP3EJE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=O20/WGx/; 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="O20/WGx/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 020961F000E9; Tue, 21 Jul 2026 18:12:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784657576; bh=0l77YtAhtryqGCfc4vlYJ0Nh7PSnW0iXZsesL/fe2+s=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=O20/WGx/FyVOYTFNzHNWxBirbShfNV7Hhs/czSrJyRNKROb3SDqi44aS/tJ4QbnNq ZJB9CKzNssG1eT7eBKHaOGMfR8cv9s9WOw5jDuMLxMcymV3bRSEhyR3UvrQeqI8L3A dtn/DlBt/XBGC2ulWPklzbQ7r7ct4E86N4A1PJ5Q= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wayen Yan , Lorenzo Bianconi , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.18 0817/1611] net: airoha: fix foe_check_time allocation size Date: Tue, 21 Jul 2026 17:15:33 +0200 Message-ID: <20260721152533.766711956@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152514.750365251@linuxfoundation.org> References: <20260721152514.750365251@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wayen Yan [ Upstream commit 5c121ee635680c93d7074becf14cfbaac140f80d ] foe_check_time is declared as u16 pointer but was allocated with only ppe_num_entries bytes instead of ppe_num_entries * sizeof(u16). When airoha_ppe_foe_verify_entry() is called with hash >= ppe_num_entries/2, it writes beyond the allocated buffer, causing heap buffer overflow and potential kernel crash. Fixes: 6d5b601d52a2 ("net: airoha: ppe: Dynamically allocate foe_check_time array in airoha_ppe struct") Signed-off-by: Wayen Yan Acked-by: Lorenzo Bianconi Link: https://patch.msgid.link/178161119471.2163752.14373384830691569758@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/airoha/airoha_ppe.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c index 005128717a45c9..798839aa1010b8 100644 --- a/drivers/net/ethernet/airoha/airoha_ppe.c +++ b/drivers/net/ethernet/airoha/airoha_ppe.c @@ -1538,7 +1538,8 @@ int airoha_ppe_init(struct airoha_eth *eth) return -ENOMEM; } - ppe->foe_check_time = devm_kzalloc(eth->dev, ppe_num_entries, + ppe->foe_check_time = devm_kzalloc(eth->dev, + ppe_num_entries * sizeof(*ppe->foe_check_time), GFP_KERNEL); if (!ppe->foe_check_time) return -ENOMEM; -- 2.53.0