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 D56053DDDDB for ; Fri, 8 May 2026 13:13:55 +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=1778246035; cv=none; b=PonlODnNsTU4tc3XchJKN5zzdRcx+skaqyxfDpJRd9r1J35E//QKGEIR5LKIR92g0XevkBfjwbjKm+XV8A72G1tscFknRxXKmfTIvKhRE+KmX8qVgEXAZRFnJ4klrjAFszGRLKx2VV/ewI1HETTxaWc42urq015b6mjnKDYml7k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778246035; c=relaxed/simple; bh=GqztRyiSrQs04joOpgZixUDgX1Ahieg9D5VTgPOSmPY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=rlSH0gPU11nwPHwJCx9mdqDj3CN1Z1Sa/gk9Qo7A5URKaKXlbfOiWs9bycHrBBjM8IrsLTCXJ2FsX/CvISDf07Opby70JCkMBpbCeHCd5UkW0aZvUdfqvbZMsBG6Rd4NzmPgjqW8oN6aDTysTXvGvYOV2gzveNqZoysRD4LRQho= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zktnv4le; 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="zktnv4le" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0AF4BC2BCB0; Fri, 8 May 2026 13:13:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778246035; bh=GqztRyiSrQs04joOpgZixUDgX1Ahieg9D5VTgPOSmPY=; h=From:To:Cc:Subject:Date:Reply-To:From; b=zktnv4leLaVg6WMK+i129IaclnVcCJm8VfiEHVOV7XFQhtMS5SVjbyM2Pz1hKRp/y 7APJLC4X5qVrhWEqRYlvxwjsOoNguAS0Nyq3OqnexWccAH1sxt5ihCd099poT9FPvD hy6kAl9r1kTN0iGN12EjpCS6gpOmNIzTf10sO81Q= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43291: net: nfc: nci: Fix parameter validation for packet data Date: Fri, 8 May 2026 15:11:56 +0200 Message-ID: <2026050853-CVE-2026-43291-6242@gregkh> X-Mailer: git-send-email 2.54.0 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=3384; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=M3yboVVuwllNa5VBhOupESjzENLTArAxT659ypR6Xfc=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/H0r+/9I3M1nYIzc5Uezv9+u97L1Z065kJ0QGJweeN e+vsZjREcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABNhXsgwP8wuZ9Ne8SsPmq5u Xb4iRCf8VOVpc4Z5lgZ6tlmsX+oTGJ+Ef5OMiJjev88WAA== 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: net: nfc: nci: Fix parameter validation for packet data Since commit 9c328f54741b ("net: nfc: nci: Add parameter validation for packet data") communication with nci nfc chips is not working any more. The mentioned commit tries to fix access of uninitialized data, but failed to understand that in some cases the data packet is of variable length and can therefore not be compared to the maximum packet length given by the sizeof(struct). The Linux kernel CVE team has assigned CVE-2026-43291 to this issue. Affected and fixed versions =========================== Issue introduced in 5.15.195 with commit 8fcc7315a10a84264e55bb65ede10f0af20a983f and fixed in 5.15.202 with commit a24a8a582da4426b2042e510a1080df84083b51d Issue introduced in 6.1.156 with commit bfdda0123dde406dbff62e7e9136037e97998a15 and fixed in 6.1.165 with commit f5218426f765eee22e178df9c126d974792fb6a5 Issue introduced in 6.6.112 with commit 0ba68bea1e356f466ad29449938bea12f5f3711f and fixed in 6.6.128 with commit ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 Issue introduced in 6.12.53 with commit 74837bca0748763a77f77db47a0bdbe63b347628 and fixed in 6.12.75 with commit 3b91160e9a91b5a2662875417dc42dc5b0bf03ea Issue introduced in 6.18 with commit 9c328f54741bd5465ca1dc717c84c04242fac2e1 and fixed in 6.18.16 with commit c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b Issue introduced in 6.18 with commit 9c328f54741bd5465ca1dc717c84c04242fac2e1 and fixed in 6.19.6 with commit 498fc5d0d650c77e87fcc73808d4f43240c21805 Issue introduced in 6.18 with commit 9c328f54741bd5465ca1dc717c84c04242fac2e1 and fixed in 7.0 with commit 571dcbeb8e635182bb825ae758399831805693c2 Issue introduced in 6.17.3 with commit c395d1e548cc68e84584ffa2e3ca9796a78bf7b9 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-2026-43291 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/nci/ntf.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/a24a8a582da4426b2042e510a1080df84083b51d https://git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5 https://git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 https://git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea https://git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b https://git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805 https://git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2