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 17AD64D37C5 for ; Sun, 18 Oct 2026 16:21:39 +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=1792340501; cv=none; b=IX9PK89JnYEUIkHwf2ssQlJVQtaZ8YR8N/gswbHWKlnPsFskqGsDKEuNVKU4UG/2ehLmiOIj+1aKiULEPTD/yJQVLCSO83WA0h860PoGLWaVUmQh+d64Q0nJU7+2u3N9fKVQuunWA8nDa/3vZt7ro5uj1xHDcmw0dgzo1kBs8rQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792340501; c=relaxed/simple; bh=LcwRVGdz1vpkiWtt/rGwRNA3IYOWPEWnD1ApBarRZnI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OfkbXx61rei43kmqbJs2CnmcYgKIu5m+2B8f5MSgku7p/Wx77pdIZ2dxl/zWzW+wAb9voTB5MukAPZgbCzUouGmrcQpBIuP29LCQp33OwC42/TUAkr+Yj+PuO85DGdkE867Jw71by7xZjVNcPrg3acVYtLatm5nmSSumon+2aLM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=s+85u9f9; 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="s+85u9f9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D3501F000C7; Sun, 18 Oct 2026 16:21:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792340499; bh=UNe6hIdCG3rg10wbVlzrbgGgB30qcwQX2TKWihiE4GY=; h=From:To:Cc:Subject:Date:Reply-To; b=s+85u9f94s/2WhWUdPOTDRKbrnjfaKLHEPL1Fqa8zvBb5wErtCamUHej6Q/GMLII5 hhOn0EBuK+FIqMaVn6gMrYIc8Hp0TPi3eku3/Cik/7glnqf15zCkSxbshY49PS4x6t K8YeMbJvJNS0giWTLxZoxy3cEi65+q2R55MISaLQ= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-98830: wifi: wfx: validate MIB read length before copying to caller Date: Sun, 18 Oct 2026 17:46:45 +0200 Message-ID: <2026101830-CVE-2026-98830-2b3f@gregkh> X-Mailer: git-send-email 2.56.0 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=2666; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=uBSG+6vVMnxfpreIPUaCXcPV3GAiSlSDtgyMlnrECfU=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlXXsaJtX3LLW4Uepp75j5DxYLg+6JVWf33K7NY6mR9P dr/NX3piGVhEGRikBVTZPmyjefo/opDil6Gtqdh5rAygQxh4OIUgInM9WdY0H94w4VPZawMLl5q Uzap7PLaYyleyrDg6n3D/Rvtl6/+WNX0aE7jPSHjqN0yAA== 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: wifi: wfx: validate MIB read length before copying to caller wfx_hif_read_mib() copies reply->length bytes from the firmware response into the caller-provided buffer without checking that reply->length does not exceed val_len. A firmware response with a length field larger than expected overruns the caller buffer and reads past the end of the reply allocation. Replace the dead -ENOMEM check with an active validation that reply->length fits within val_len before the memcpy. The Linux kernel CVE team has assigned CVE-2026-98830 to this issue. Affected and fixed versions =========================== Issue introduced in 5.5 with commit f95a29d40782f4f0052a692a822de3ba044b19ff and fixed in 6.12.113 with commit 02886c18a340da59df57365f29009e1258bfe333 Issue introduced in 5.5 with commit f95a29d40782f4f0052a692a822de3ba044b19ff and fixed in 6.18.56 with commit 71d140099165de03128c00dd129f1eab21c6a3c4 Issue introduced in 5.5 with commit f95a29d40782f4f0052a692a822de3ba044b19ff and fixed in 7.2.10 with commit 7acb36fd60a3e7b858f12e69a919c3609b281408 Issue introduced in 5.5 with commit f95a29d40782f4f0052a692a822de3ba044b19ff and fixed in 7.3-rc6 with commit ce67ebe9d8629776ce38e6995ae72fb903c828db 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-2026-98830 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/wireless/silabs/wfx/hif_tx.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/02886c18a340da59df57365f29009e1258bfe333 https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4 https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408 https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db