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 B3C963D75AD for ; Fri, 28 Aug 2026 06:55:14 +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=1787900115; cv=none; b=QXU7nl/e3PUxsrhryIOPI7xbYXySTjbW/J5haqaEtmbPSdics/AxOK3UBA1KMcBR2YWslcn7v86KlsQK5rAxhoNFRGC2d2/vOS5IPLj3PddSZ0WcruhHPyDVQj44IFEqLyklQBJ9STvIDmiVz5B6/qMY3C89CFZ4zUVryKsiwL4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787900115; c=relaxed/simple; bh=XPAJxJe/Xri1bzokDLhcox6R5wtws9EvMkZADNLv1xE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=P4Lb6flGobhGWckdEmieI6HJwneeJ3oYaOgSclLD9njoJivSZ1BcbvgEvLiC/VkkOR5KlhUmsDj+5sttU10nB/X/LEnC+4boLWXFBItJOl+UM4L5qbgACMuMKn9gIEGDpKG7Uc7AMvFS88hFV1crQWpYk27v/xeE3O/7ruLNCxE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mE1iEh5r; 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="mE1iEh5r" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1AECE1F000E9; Fri, 28 Aug 2026 06:55:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1787900114; bh=f/O97ouMDTtkJmLGB5MMr71xSYJNFheJPDjrPmm08iE=; h=From:To:Cc:Subject:Date:Reply-To; b=mE1iEh5rwGbdCiSxGZKCThjK+S/qHTfflpYHzQQsXeIfDJoHzkMwITXsWoiqNCxJ2 3+/BB7+bfEDFYKxOX7vBo4Hjh4bJdIc9GSwfQM3e2R33pjCQ1uceUntea9F1gJCHJY bTHlwoBTLxuPkMdtqMCFSlMVtP+js3mnbi4XMrUw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80717: sctp: validate Adaptation Indication parameter length Date: Fri, 28 Aug 2026 08:53:40 +0200 Message-ID: <2026082810-CVE-2026-80717-e0b5@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=3870; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=D0VSQFvcowAeYha9Es76/ta/PGwvbFBl4tkjxVKq8dU=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkTDcJmfPXiYndcrSutnGRVcmPpyl89qoYP++t4mCdzh B88airXEcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABPZv5JhrvT24zmbHHbb7a6o dDFvj7KeYffuMMM8a9+dkU9/qj85OP/G5Y3L2I9efb9xHwA= 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: sctp: validate Adaptation Indication parameter length The Adaptation Layer Indication parameter contains a fixed 32-bit Adaptation Code Point after its parameter header. However, sctp_verify_param() accepts a header-only parameter because the generic parameter walker only requires the header to be present. sctp_process_param() then reads adaptation_ind beyond the declared parameter. When the malformed parameter is last in an INIT, the read starts at the receive skb tail, and the value is copied into the state cookie returned in the INIT ACK. This may disclose four receive-buffer tail bytes. Require the declared parameter length to match the fixed structure size and abort the association through the existing invalid parameter length path otherwise. The Linux kernel CVE team has assigned CVE-2026-80717 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.10.265 with commit fa7861ddbe3b525b5d541c15c3953d3569e6eb0e Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.15.216 with commit 4c92c601c061e5602db2edeea54fef74aa304027 Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.1.183 with commit 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.6.151 with commit 93942b5772e0eee4147d4799cc1b936ae12fa615 Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.12.103 with commit 5fd7cfc708dfc988ae9920c21075e6121bc89926 Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.18.44 with commit 17b412468c7a44f66a385bda48cdc1e94e39bd6d Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 7.1.8 with commit bfa28cf99eb4d096c87da939f54233444d209ca5 Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 7.2 with commit 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 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-2026-80717 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/sctp/sm_make_chunk.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/fa7861ddbe3b525b5d541c15c3953d3569e6eb0e https://git.kernel.org/stable/c/4c92c601c061e5602db2edeea54fef74aa304027 https://git.kernel.org/stable/c/7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a https://git.kernel.org/stable/c/93942b5772e0eee4147d4799cc1b936ae12fa615 https://git.kernel.org/stable/c/5fd7cfc708dfc988ae9920c21075e6121bc89926 https://git.kernel.org/stable/c/17b412468c7a44f66a385bda48cdc1e94e39bd6d https://git.kernel.org/stable/c/bfa28cf99eb4d096c87da939f54233444d209ca5 https://git.kernel.org/stable/c/74b21f52c5c5a71a05c0ff70e513f4f04ff28b17