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 C466F1ACEDA for ; Thu, 27 Feb 2025 02:19:07 +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=1740622747; cv=none; b=LqCF9uwK2uOLqsIzoTEqbmRPXNOaRSzAAg2LMRzYJ9lBZCwJRrJWrWsjVvxj/MNWEvACWwxbsNWH/QwUUaYiqK+YvCv+xTfJvqG+sadZLsejqcThw0vwew5zWsPTKmYUnSw5re2QN/F1Gzu0GBqQCBwIEtUXeeW6qyjuRZ0o1iQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740622747; c=relaxed/simple; bh=/SC7CyWX2F0wHRZJFC7C0IcUBPlTpZGQ1glv/3qSdf0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qnki601gY35veEGmCWxS+fY2sa9GxG/EOBuvDNeti5SjxaZKCAa/rDFfTyre+AYeFX3Wvflzl2kIa0Ij3ALbglUcF/W+8VrOCFy7ag/TXp/ZOZA73NtrZleNnfP3TSHhO6wProX/6ACQrrDtAHQB9gjPuNRC1wJZvL/hP+EpEa0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GH2FcHhw; 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="GH2FcHhw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 918A0C4CEE2; Thu, 27 Feb 2025 02:19:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1740622747; bh=/SC7CyWX2F0wHRZJFC7C0IcUBPlTpZGQ1glv/3qSdf0=; h=From:To:Cc:Subject:Date:Reply-to:From; b=GH2FcHhwuNhHsK1KHi/fHz6wt7Civ4TRDlceLpmcfA3HYycNsWw8Q/ZYmoRPB04v/ rHt2V6G3T6uQK8ZOLBsqp/J1ftr8f4NYMyhafrkHUZbHRWCF9DlYEC/92+cFro8xRi qB7vED9JHXs1U0tjBzgOeBGRA9XUtrHmUhfmfCd8= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2025-21793: spi: sn-f-ospi: Fix division by zero Date: Wed, 26 Feb 2025 18:17:49 -0800 Message-ID: <2025022609-CVE-2025-21793-2c1e@gregkh> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2434; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=/SC7CyWX2F0wHRZJFC7C0IcUBPlTpZGQ1glv/3qSdf0=; b=owGbwMvMwCRo6H6F97bub03G02pJDOn7T6uu4b0nviR7qpCQQsDvbLcKPTvp/C9zNKcUtT13L FFkanHoiGVhEGRikBVTZPmyjefo/opDil6Gtqdh5rAygQxh4OIUgInET2GYK/NM8ZqW4NWZz6Pd SpIitj3tkNxkyrDgwJmdKuX50+96hPwWmHvuqnblOvZGAA== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: spi: sn-f-ospi: Fix division by zero When there is no dummy cycle in the spi-nor commands, both dummy bus cycle bytes and width are zero. Because of the cpu's warning when divided by zero, the warning should be avoided. Return just zero to avoid such calculations. The Linux kernel CVE team has assigned CVE-2025-21793 to this issue. Affected and fixed versions =========================== Issue introduced in 6.2 with commit 1b74dd64c8612619e399e5a31da79a3636914495 and fixed in 6.6.79 with commit 966328191b4c389c0f2159fa242915f51cbc1679 Issue introduced in 6.2 with commit 1b74dd64c8612619e399e5a31da79a3636914495 and fixed in 6.12.16 with commit 4df6f005bef04a3dd16c028124a1b5684db3922b Issue introduced in 6.2 with commit 1b74dd64c8612619e399e5a31da79a3636914495 and fixed in 6.13.4 with commit 7434135553bc03809a55803ee6a8dcaae6240d55 Issue introduced in 6.2 with commit 1b74dd64c8612619e399e5a31da79a3636914495 and fixed in 6.14-rc3 with commit 3588b1c0fde2f58d166e3f94a5a58d64b893526c 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-2025-21793 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/spi/spi-sn-f-ospi.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/966328191b4c389c0f2159fa242915f51cbc1679 https://git.kernel.org/stable/c/4df6f005bef04a3dd16c028124a1b5684db3922b https://git.kernel.org/stable/c/7434135553bc03809a55803ee6a8dcaae6240d55 https://git.kernel.org/stable/c/3588b1c0fde2f58d166e3f94a5a58d64b893526c