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 6EC004EC668 for ; Fri, 4 Sep 2026 15:56:50 +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=1788537413; cv=none; b=i38746stW8RompKAhx9YbDACIE10guscu6A5rkjw0eEUnMY48PNFes0jlojUQrUf7tQdBpPDK8JrbZOGzrbVo6KmsVqThenQcwqnH4TsNH9UGG0uN/yKuDeqUIHinlZ7vXde7+QyIqJGhTwhYdYnO4Xt1tc9GKbve+fjjPt5QmU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788537413; c=relaxed/simple; bh=aHxDx6w1YXU31z0V9sSNSzd9IDTP2ZqmcNAStDNM/UU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=XJKFR4YQBfMcmweeVxKDE1JBpy9p48F2aOE4xYxqnwYjwpjsxVv88UYAvYm4rSCZWio0KGlXA14uvInqFSNQsNQ/y/CBuRCQbEXHdaqduSdKS+wyxP5CH//4gpclLuwMOGs0YoSQg+Mxbt4TzZ99y9FTcgQkXSnb4ZwrAWOXnkE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=n+9YbWBN; 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="n+9YbWBN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D53F41F00A3E; Fri, 4 Sep 2026 15:56:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788537409; bh=BxIw+PWkcWeT9Zo+tTLz0XgEaEGYpqbZxtK8hInA8p8=; h=From:To:Cc:Subject:Date:Reply-To; b=n+9YbWBN2RB7iRbIJCoGZpo1xCGQm/h7wVG1wgIwet/0f0yZUKhmy7ov6SDXprnfh UG9GQ8YtZC67tEDW9UgAgALBlmwxmpcYm7p/gF0ADByIOFONgJeOMdxoCUlOdp/A0j utcxV2NfnkBpMddvi3ipUDyQMoStwkZopfJWyTiw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80832: crypto: qce - fix CCM AAD buffer underallocation Date: Fri, 4 Sep 2026 17:52:59 +0200 Message-ID: <2026090456-CVE-2026-80832-a194@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=4308; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=SFlnhbFmvh/R5NaQVTs02LhOdZuX+c+9JLys5gaZ/yY=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmzXkbk3Z/m9HrOtR3/si9kSW7JZwvm32pyZ8KqtpcCT 6UKXsz63xHLwiDIxCArpsjyZRvP0f0VhxS9DG1Pw8xhZQIZwsDFKQATOenMMD/0DufBb9daO/8l s6dV77ow5+Vq7T0MC9o0zEoF9I/ldOnc+qDs+Z9p3oT3RgA= 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: crypto: qce - fix CCM AAD buffer underallocation The AAD buffer allocated in qce_aead_ccm_prepare_buf_assoclen() can be smaller than the length later programmed into the DMA scatterlist. The allocation size is currently calculated as: ALIGN(assoclen, 16) + MAX_CCM_ADATA_HEADER_LEN while the DMA length is set to: ALIGN(assoclen + adata_header_len, 16) Since ALIGN() does not distribute over addition, the allocation can be smaller than the DMA length. For example, when assoclen = 32 and adata_header_len = 2: allocation = ALIGN(32, 16) + 6 = 38 DMA length = ALIGN(32 + 2, 16) = 48 As a result, the QCE hardware can read beyond the allocated buffer while computing the CBC-MAC over the associated data. The extra bytes are folded into the authentication tag, resulting in an incorrect tag and causing CCM self-test failures such as: alg: aead: ccm-aes-qce encryption test failed (wrong result) on test vector 8 Fix the allocation by adding the maximum possible AAD header length before alignment: ALIGN(assoclen + MAX_CCM_ADATA_HEADER_LEN, 16) This guarantees that the allocated buffer is large enough for the fully padded AAD data for all supported header sizes. The Linux kernel CVE team has assigned CVE-2026-80832 to this issue. Affected and fixed versions =========================== Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 5.15.220 with commit 11775b35ce9f27e73d62188d7d38aa0dc0a219aa Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 6.1.187 with commit c9e0f06a023107694698a7930616aeb460d91816 Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 6.6.156 with commit cc56d2b0d77cfeea061e98114992ee687d5eb4dd Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 6.12.108 with commit 002f1f99aef7ea631cb687fc17bce64e4963f6aa Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 6.18.49 with commit 2f65718b9c1095eef1ae9b374aa0384b1b083f3c Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 7.1.13 with commit 46a84efe2dbaddde89073a3c00c694486937c34b Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 7.2.3 with commit 4839f4c21f9c577eedef2919ced878a3057c7fc3 Issue introduced in 5.14 with commit 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and fixed in 7.3-rc1 with commit 7f2345f47dd189625f657cd72437179ab4170ee1 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-2026-80832 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/crypto/qce/aead.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/11775b35ce9f27e73d62188d7d38aa0dc0a219aa https://git.kernel.org/stable/c/c9e0f06a023107694698a7930616aeb460d91816 https://git.kernel.org/stable/c/cc56d2b0d77cfeea061e98114992ee687d5eb4dd https://git.kernel.org/stable/c/002f1f99aef7ea631cb687fc17bce64e4963f6aa https://git.kernel.org/stable/c/2f65718b9c1095eef1ae9b374aa0384b1b083f3c https://git.kernel.org/stable/c/46a84efe2dbaddde89073a3c00c694486937c34b https://git.kernel.org/stable/c/4839f4c21f9c577eedef2919ced878a3057c7fc3 https://git.kernel.org/stable/c/7f2345f47dd189625f657cd72437179ab4170ee1