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 F19AB3976A2 for ; Wed, 25 Mar 2026 10:27:27 +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=1774434448; cv=none; b=ncjYQ86MqAMVaUSLQBg5WHDC4s3MMmATWdpw1kUrFgMw8PxiL9tbh4oUOzftALHQKX118Pl9TDTPSLMcEvOOXeAo+eyV3X+A5VYNLAtouJX8osuGqFgVPisgEdfo3mp2s24DZuc2y/plNJHfp/31Vams4jAUAfZwWNyB4QhIHyQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774434448; c=relaxed/simple; bh=CppxnoYj9296ykpqJzsorYHT+ock+1/hb8UPdIY55Yo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=sSVlSzTqezpqfdbM2zjaFt0lv52zLX7Rn4yclvu2xan7HDfGT/ffDZ67wLd6Aok+1xByXfdlq2ONMPZVr7gSZ3qDYQrEmUZ1/SUsn1LB+8MHwTse+Bf9Yh6wnjdfZqCeWOaEK0SoVWAyrMdcHSRqnjSK6Ns/5d1HRkV7hX9xhCU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vcA8RLG8; 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="vcA8RLG8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 440DCC4CEF7; Wed, 25 Mar 2026 10:27:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774434447; bh=CppxnoYj9296ykpqJzsorYHT+ock+1/hb8UPdIY55Yo=; h=From:To:Cc:Subject:Date:Reply-To:From; b=vcA8RLG8mLw6qZtPB8twKhdEZu9Rs0P1wSI4RAk897ms6GSQUQpySF3g8XA6ghOc6 hiQx2Y3HVV/7ldzgctxjK97u2WtXKcTDxNirmhEHrxEsdKqMBHpRWB8KbpRKMB5JAa Xrs+yPDUgCFd1OMmoPrNOLtjrwmJPYnr2sVKJFWo= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-23291: nfc: pn533: properly drop the usb interface reference on disconnect Date: Wed, 25 Mar 2026 11:26:35 +0100 Message-ID: <2026032525-CVE-2026-23291-eae3@gregkh> X-Mailer: git-send-email 2.53.0 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=2912; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=yK1fPdarswDc4xumSkH6oZRyLdi4tUaGXHH8pRJMWC0=; b=owGbwMvMwCRo6H6F97bub03G02pJDJmHdwT2mWg4H/I59KaipSuJSY4x/L6r8NtXvoo31Dv6Z PIUulg7YlkYBJkYZMUUWb5s4zm6v+KQopeh7WmYOaxMIEMYuDgFYCKX8xnmZ6+/vvqoXLS0VFn5 GU41FX5e6bp7DPPdVzbJTJxmKtbx9sD52M2J1/2PGrwEAA== 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: pn533: properly drop the usb interface reference on disconnect When the device is disconnected from the driver, there is a "dangling" reference count on the usb interface that was grabbed in the probe callback. Fix this up by properly dropping the reference after we are done with it. The Linux kernel CVE team has assigned CVE-2026-23291 to this issue. Affected and fixed versions =========================== Issue introduced in 3.1 with commit c46ee38620a2aa2b25b16bc9738ace80dbff76a4 and fixed in 6.1.167 with commit 7398d6570501edc55a50ece820f369ab3c1df2e7 Issue introduced in 3.1 with commit c46ee38620a2aa2b25b16bc9738ace80dbff76a4 and fixed in 6.6.130 with commit d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0 Issue introduced in 3.1 with commit c46ee38620a2aa2b25b16bc9738ace80dbff76a4 and fixed in 6.12.77 with commit 7ff14eb070f0efecb2606f8d7aa01b77d188e886 Issue introduced in 3.1 with commit c46ee38620a2aa2b25b16bc9738ace80dbff76a4 and fixed in 6.18.17 with commit 00477cab053dc4816b99141d8fcca7a479cfebeb Issue introduced in 3.1 with commit c46ee38620a2aa2b25b16bc9738ace80dbff76a4 and fixed in 6.19.7 with commit 4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74 Issue introduced in 3.1 with commit c46ee38620a2aa2b25b16bc9738ace80dbff76a4 and fixed in 7.0-rc2 with commit 12133a483dfa832241fbbf09321109a0ea8a520e 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-2026-23291 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/pn533/usb.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/7398d6570501edc55a50ece820f369ab3c1df2e7 https://git.kernel.org/stable/c/d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0 https://git.kernel.org/stable/c/7ff14eb070f0efecb2606f8d7aa01b77d188e886 https://git.kernel.org/stable/c/00477cab053dc4816b99141d8fcca7a479cfebeb https://git.kernel.org/stable/c/4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74 https://git.kernel.org/stable/c/12133a483dfa832241fbbf09321109a0ea8a520e