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 E67114A8FD1 for ; Fri, 4 Sep 2026 15:17:36 +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=1788535058; cv=none; b=pvSVS2wEz0HlW0dbnhnOv58QzXWs7Q9MEkrwaurw60vxpkpo38QcHNOgug2gl63kN3XikZ/ztERnHEuyiFDDk6++9AlhLUu/mps6lNwGFs+dcXdSERPRkxvuk8V1gXNzfh33YiCV7+l33fc1bVOe1V7pUzcGuy0UWu2x1IvBZRE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788535058; c=relaxed/simple; bh=7BkxoMO90OKupBIpyk6nYQMeUbea8yjqzkqMofnk//M=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=okAKaLQadoXPr3BNZ9AgRkO+MKrZiSmQ+VSgzBDqMEeLMdpNyiWW+u4dgLwZ4hCOpp+Sn/65hDg2PkQvADOCp+SnPoSM5cmTc9JVLAPX9qhpcfBAO3MQV9zQX2ovGxM76YKqEZZnPx3ktuzvY2DPoFfTXEIVRM7WnhfFCy173yM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=PMJubobU; 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="PMJubobU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BE341F00A3D; Fri, 4 Sep 2026 15:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788535056; bh=BwIBWFsKXA1dK+Gv9rhs448drBQSieGpZDH9xzGUFXw=; h=From:To:Cc:Subject:Date:Reply-To; b=PMJubobUDyweRArFCVuXcenbiBj39+DQdZQJmt32ffvHXZE71MlxgkI5mfrcKkKCu DSOX0CnUU4CwLPWFqW0A+y205R9uLIgxXV+r18RtTwa/Kx/1QwPFW7s9TQPpdoh3YP /Kcc+qjvc3QUg6ZOpVJasL7bveTrtJ9EiomE7DrY= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80803: nfc: digital: clamp SENSF_RES length to the destination buffer Date: Fri, 4 Sep 2026 17:11:42 +0200 Message-ID: <2026090409-CVE-2026-80803-7853@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=3816; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=mY5sSEnMshnionPo0pP3Cyot3v8T6JOP/AI0DaKu+kk=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmz7vfGpLq9+szHXHpphYqjxWkb+SW+bL9tDnx/W3xp6 sWHQg4XO2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAisxcyzI9z/PHH8pDfpoRZ Kupvshf5NM0VWsew4NLsByE8c3SX2YqULP01JUJMJ8rnMQA= 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: digital: clamp SENSF_RES length to the destination buffer digital_in_recv_sensf_res() memcpy()s resp->len bytes from a remote NFC-F device response into the NFC_SENSF_RES_MAXSIZE-byte target.sensf_res field without an upper-bound check. A nearby malicious NFC-F device can send an oversized SENSF_RES response to overflow the stack-local struct nfc_target. Clamp resp->len to NFC_SENSF_RES_MAXSIZE before the copy. Found by 0sec automated security-research tooling (https://0sec.ai). The Linux kernel CVE team has assigned CVE-2026-80803 to this issue. Affected and fixed versions =========================== Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 5.10.267 with commit 6afb29751ee731e7f7a96feb8a15f91441e552ba Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 5.15.218 with commit e886c63d2ca7108826076989103a1ffa8a0bb8f4 Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 6.1.185 with commit 4e942da2869bcd646353eef706b7dd82efeb9db5 Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 6.6.154 with commit d0756a98277e383c26fead988a96c91f0781cd7f Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 6.12.106 with commit af4c0606f743e009254a8d252096855335ade85d Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 6.18.47 with commit a56773e649ea99b344d6bbaf90f34c8e3fadef5d Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 7.1.11 with commit a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6 Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 7.2.1 with commit 31aa28ed732f66ab83c40ef53d99791be69b85c4 Issue introduced in 3.13 with commit 8c0695e4998dd268ff2a05951961247b7e015651 and fixed in 7.3-rc1 with commit 344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16 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-2026-80803 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: net/nfc/digital_technology.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/6afb29751ee731e7f7a96feb8a15f91441e552ba https://git.kernel.org/stable/c/e886c63d2ca7108826076989103a1ffa8a0bb8f4 https://git.kernel.org/stable/c/4e942da2869bcd646353eef706b7dd82efeb9db5 https://git.kernel.org/stable/c/d0756a98277e383c26fead988a96c91f0781cd7f https://git.kernel.org/stable/c/af4c0606f743e009254a8d252096855335ade85d https://git.kernel.org/stable/c/a56773e649ea99b344d6bbaf90f34c8e3fadef5d https://git.kernel.org/stable/c/a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6 https://git.kernel.org/stable/c/31aa28ed732f66ab83c40ef53d99791be69b85c4 https://git.kernel.org/stable/c/344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16