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 07FD1432313 for ; Thu, 3 Sep 2026 08:22:16 +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=1788423738; cv=none; b=akEHxqhKDTde04ksmkqv5pYKavemsoTZ44gaC7v2yMJ075KhetkNV/AKP4wfxI4bvmf7nx/qH0NOZ24zRYwI/CTZ4N1hY2TrQqv1yb0bMzem8gbYMzMkNV6tIUUtP5bWRIm16StYLMHI1vUE7OYtkWpxCanBlpCkAn+d4+LVpMU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788423738; c=relaxed/simple; bh=IJ/fJUHR6wSbwcp9hapOfwANuT81aCBaYMpZrZTMb5w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=DBKqwlhnb5gNbBNWw56D/eYKMpL38xnK36Xmx8BpfRx7db+hfZD16ETQkC3rK6K9jtUE7lXgYmnxZbNt3HeyVUKQgeGPJUpbB6oXr9rU+cTESOxfR+YMBn4lgru25gDY8O6fiWexxNqQk4/feOdLZkUq0L3sKe383FWiZdpt6bQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LbDPnLPT; 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="LbDPnLPT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 279C01F000E9; Thu, 3 Sep 2026 08:22:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788423736; bh=heA5iyP2ZWvwt278YGsh5CCOHbGjbkHXSyQz+qSIoNI=; h=From:To:Cc:Subject:Date:Reply-To; b=LbDPnLPTWNP7OqcRBoTcPFUA7ui9i32wp04R83Y8cJHsO3LjiYjPKC2+HCjvHPrtK t9nPpPY1ym7W8+Kyr/XQkuHmhU6k+YmJSjmKPkVPpIaMb0S2YABOPIeU5SqvfQUXQq iZxV60gFsB1EU7aFEKkzqZM1B62TFjGQvrX6Yiu4= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80737: serial: amba-pl011: synchronize DMA teardown Date: Thu, 3 Sep 2026 10:22:06 +0200 Message-ID: <2026090359-CVE-2026-80737-823d@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=3438; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=FBQzSh8/njE5IbjDtJkAssVe4XWdmw8anwtJWeJBVfc=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkz9dSP7tWzrn9j5u8ru3HfmzkcO5o+sDnF2k1ZfGg7h /DhDduudcSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEtPMZ5ql18b9aZcwx9S/b I+EEptm38tmVAxjmB0btEG94mbRCpnSv/d0pO7u18jyPAgA= 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: serial: amba-pl011: synchronize DMA teardown dmaengine_terminate_all() does not wait for a running callback, so the TX callback can still touch the TX buffer after it is freed. The RX poll timer reads the RX buffers without the port lock. Switch to dmaengine_terminate_sync() and delete the RX timer before freeing the buffers. The Linux kernel CVE team has assigned CVE-2026-80737 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 5.10.267 with commit a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 5.15.218 with commit 44bd0ecc3444882d08ecfbc2b2418d2f463d3186 Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 6.1.185 with commit f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03 Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 6.6.154 with commit c8c8e895f65fbf71ea6224e27cf8dab91b776e0d Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 6.12.106 with commit 9f6989e477f03a4721d34bb4b09b17accd40283e Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 6.18.45 with commit 5974cb66681eac367107b05924744d7e3b49d41c Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 7.1.9 with commit fdfb46c387241b4eddd36d746793764413285913 Issue introduced in 2.6.39 with commit ead76f329f777c7301e0a5456a0a1c7a081570bd and fixed in 7.2 with commit 440915499231e9db1c361aa45bb702e8fd3b4a32 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-2026-80737 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/tty/serial/amba-pl011.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/a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e https://git.kernel.org/stable/c/44bd0ecc3444882d08ecfbc2b2418d2f463d3186 https://git.kernel.org/stable/c/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03 https://git.kernel.org/stable/c/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d https://git.kernel.org/stable/c/9f6989e477f03a4721d34bb4b09b17accd40283e https://git.kernel.org/stable/c/5974cb66681eac367107b05924744d7e3b49d41c https://git.kernel.org/stable/c/fdfb46c387241b4eddd36d746793764413285913 https://git.kernel.org/stable/c/440915499231e9db1c361aa45bb702e8fd3b4a32