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 A4EC7446067 for ; Fri, 4 Sep 2026 15:17:28 +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=1788535049; cv=none; b=i0268qEqO7+XtV7oS9gzOyzkIm9dh0vHe15wiRmJYHu3wOUcxi8HctGW3dH1DLvPJnrTgm2cb/vsdrVov1SHe86/yWP+P7AXyv/vKS8XjWuW6IZKpVOuz7g71zUpKqi7068EH1bWBR4RFz7s6PpnWeVSoB6q5AgwmWWV9yhQ9/w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788535049; c=relaxed/simple; bh=0V3XMupUW5m6IPr2jRtTOaT94eBB9rvZREzjxAYUBbA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=IcR+/im3GiYTjESOFp6SU7EchxGih1FBiiL7x6egYF7xXlxSs8lkrQ4XTGYQKM1ZV6XwEHMUaGuzd8R0cNT/8liys35OspO3mqBp5tgfRGUYOuzXTHI9a2Xb0uTlhybWeBxhOao2hiyuYJc4h/YXqRZVm1lAEPLfAq7efT7fiuI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=MrbSn56l; 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="MrbSn56l" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9FBC1F00A3E; Fri, 4 Sep 2026 15:17:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788535048; bh=bHWspvNw2rzqwpygGVBJxJ8mcChLTFZGrhK6YtsreY0=; h=From:To:Cc:Subject:Date:Reply-To; b=MrbSn56lpXJAJ03CYQB53yAGPcYxbtrFUm9WClhgUPiu60bx4dZUldgTtVF8FhXPC A75+Zatx3RM+JIjG0FlalT+NLVZmHzOQtiJJZK7VVCymwCrOvM1VAfi+1ZYOxtqu4L d/F2/85zRHcDeE+m26cR0n1UOoY3hpBiGEE7sIaU= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80801: nfc: microread: validate target discovery payload lengths Date: Fri, 4 Sep 2026 17:11:40 +0200 Message-ID: <2026090409-CVE-2026-80801-fb51@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=3732; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=vvm3c8PbPgN/bU+V7czHh2YnLE5W3GwBaHEkPrHaDqk=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmz7vdmh69LF2Kttv/1zatxe/8CO1vxV3EXVFv40+J71 2R8OzW/I5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACYiupthvotpCtuRKbclivg3 ZPDOuDf/7jZbBYYFXXOt737wCrNJaxXjibFonmO6obAUAA== 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: nfc: microread: validate target discovery payload lengths microread_target_discovered() parses target discovery payloads from skb->data according to the HCI gate. The fixed field offsets and UID copies were checked only against the destination nfc_target buffers, not against the actual skb length. Validate that each gate-specific payload contains the fixed fields and UID bytes before reading or copying them. The Linux kernel CVE team has assigned CVE-2026-80801 to this issue. Affected and fixed versions =========================== Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 5.10.267 with commit c6de4241f2efbbab286efbb84a9c7190298b3052 Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 5.15.218 with commit 92a6f0201bb68391b5eba1b3f330af007d7323b6 Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 6.1.185 with commit cb298672282421159e53ab311fe49d204c8a52da Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 6.6.154 with commit 18f02354ed229b8e4561b580812d026e7eb29c85 Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 6.12.106 with commit e6397fe7b8b5ef18e051f49612d40ff476c5f7d9 Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 6.18.47 with commit d0902a7c454326c6384c614226ab8987f3fd425d Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 7.1.11 with commit dabfa26a208e56f4d8dbf26fddc48f188bdb0649 Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 7.2.1 with commit 953963b9ac5eecbb316617d337bfaa3d731e3c5e Issue introduced in 3.9 with commit cfad1ba87150e198be9ea32367a24e500e59de2c and fixed in 7.3-rc1 with commit 25519469972ef57c3edb1805dabd6c5612b90211 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-2026-80801 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/nfc/microread/microread.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/c6de4241f2efbbab286efbb84a9c7190298b3052 https://git.kernel.org/stable/c/92a6f0201bb68391b5eba1b3f330af007d7323b6 https://git.kernel.org/stable/c/cb298672282421159e53ab311fe49d204c8a52da https://git.kernel.org/stable/c/18f02354ed229b8e4561b580812d026e7eb29c85 https://git.kernel.org/stable/c/e6397fe7b8b5ef18e051f49612d40ff476c5f7d9 https://git.kernel.org/stable/c/d0902a7c454326c6384c614226ab8987f3fd425d https://git.kernel.org/stable/c/dabfa26a208e56f4d8dbf26fddc48f188bdb0649 https://git.kernel.org/stable/c/953963b9ac5eecbb316617d337bfaa3d731e3c5e https://git.kernel.org/stable/c/25519469972ef57c3edb1805dabd6c5612b90211