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 C13944E9C25 for ; Thu, 17 Sep 2026 16:26:40 +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=1789662402; cv=none; b=bA5A1t8rEJZmuUjKjiWGTKsIsjO0dwn7gFl8VRH8rHT743N0ivThYPO0PO4ys7A7khZ5J0JNRQkBvAElsoCzKyzUsmeCWen3cuJoDVRGEREguhJ5gqxpWZpgWRoEBlqSeS+AKzDto45yqIs4JVCV8bgbwvcc/0uyXOmVIc8SAGg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789662402; c=relaxed/simple; bh=FiV3Qktqhocy9NQ5pnRowlgCYUPaOlnqCEzSMJveYxY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hg69SiTwjMsnIHMnDCuc72dlteHd7Rx97HPAUefaydkKDblvQG2MSQDA2NjFGT8anqW9R8SiG0a/4X8OJDubWgb1C4XIjbqXf3fVq+gQwl0jNtN83zxRIn7KMsfDTKMz3KI1TUpjjzOlKDi5/0UOZP+yNBDtX/xIhuy5VPwxd10= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FBg1/HR1; 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="FBg1/HR1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22A621F00893; Thu, 17 Sep 2026 16:26:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789662400; bh=lIXpNV4TlvsLWi4778Jk0vmM691keK0URUxbTiOQB3I=; h=From:To:Cc:Subject:Date:Reply-To; b=FBg1/HR1uxJPAehsaAgo0fijExjj684sX1YhaUdLMPzke7omfeq8hKBUabp3EM5iZ ooC/KA6p77KNk6Tfih4GVAYO7eBe6EOcGN6lZIrI8mg3v8qff7eB8VG/hubIzv2rVA lmJkVbg6atHHml6ltl8QV7sf2Rlza4zeebx/lYqQ= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-90341: firmware: coreboot: Validate table bounds Date: Thu, 17 Sep 2026 17:12:51 +0100 Message-ID: <2026091702-CVE-2026-90341-2fa5@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=3904; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=k9qFMGPSAVraY5n7uorTysUjANmRJgNOuRlnhtIjeng=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlrBOb9O+MUoScyad+z3os6V+4ezUuX1zG2frL8WHnMB Jb1r9Z0dMSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEgqcwzPdgrem6tKJyvjGz 323en7HfLzb9u8OwoPf6vecVNr/WH1x4Z3nQrvKdkw6qJQEA 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: firmware: coreboot: Validate table bounds The existing coreboot_table_populate() bounds checks limit individual entries to the mapped length. However, coreboot_table_probe() replaces the platform resource length with header and table sizes supplied by firmware before mapping the full table. A malformed table can overflow the 32-bit size addition or advertise an extent beyond the resource, causing the driver to map and parse memory outside the resource. A resource shorter than the fixed header is also mapped as though it contained a complete header. Reject resources shorter than the fixed header. After validating the signature, require a complete header, calculate the advertised extent with overflow checking, and reject extents beyond the resource before remapping the table. The Linux kernel CVE team has assigned CVE-2026-90341 to this issue. Affected and fixed versions =========================== Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 5.10.270 with commit 3cca0d6dd4c2636d2514234233cb02db76621607 Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 5.15.221 with commit f79f621215a0944c4a0e1b3b86b99e433ae8c527 Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 6.1.188 with commit d848fac90c6f0566e7b93066b0b86024f65f395e Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 6.6.157 with commit 88027241c1d2c3213bac937a1c2cb89a5775a413 Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 6.12.110 with commit fd93859ecfa5b6495a6863c18fd923a7666def26 Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 6.18.52 with commit 2d98a3b89394f283f054a4a54587c14ee89acaf9 Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 7.2.6 with commit e82f260a74dea8cdd7857f2cc66f73d0da522bb3 Issue introduced in 4.12 with commit d384d6f43d1ec3f1225ab0275fd592c5980bd830 and fixed in 7.3-rc1 with commit a58a57a1076f8c5dae0327e3710899478c3be901 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-2026-90341 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/firmware/google/coreboot_table.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/3cca0d6dd4c2636d2514234233cb02db76621607 https://git.kernel.org/stable/c/f79f621215a0944c4a0e1b3b86b99e433ae8c527 https://git.kernel.org/stable/c/d848fac90c6f0566e7b93066b0b86024f65f395e https://git.kernel.org/stable/c/88027241c1d2c3213bac937a1c2cb89a5775a413 https://git.kernel.org/stable/c/fd93859ecfa5b6495a6863c18fd923a7666def26 https://git.kernel.org/stable/c/2d98a3b89394f283f054a4a54587c14ee89acaf9 https://git.kernel.org/stable/c/e82f260a74dea8cdd7857f2cc66f73d0da522bb3 https://git.kernel.org/stable/c/a58a57a1076f8c5dae0327e3710899478c3be901