| From bippy-7c5fe7eed585 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-22012: Revert "arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu" |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Revert "arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu" |
| |
| There are reports that the pagetable walker cache coherency is not a |
| given across the spectrum of SDM845/850 devices, leading to lock-ups |
| and resets. It works fine on some devices (like the Dragonboard 845c, |
| but not so much on the Lenovo Yoga C630). |
| |
| This unfortunately looks like a fluke in firmware development, where |
| likely somewhere in the vast hypervisor stack, a change to accommodate |
| for this was only introduced after the initial software release (which |
| often serves as a baseline for products). |
| |
| Revert the change to avoid additional guesswork around crashes. |
| |
| This reverts commit 6b31a9744b8726c69bb0af290f8475a368a4b805. |
| |
| The Linux kernel CVE team has assigned CVE-2025-22012 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.13 with commit 6b31a9744b8726c69bb0af290f8475a368a4b805 and fixed in 6.13.9 with commit 9e6e9fc90258a318d30b417bcccda908bb82ee9d |
| Issue introduced in 6.13 with commit 6b31a9744b8726c69bb0af290f8475a368a4b805 and fixed in 6.14 with commit f00db31d235946853fb430de8c6aa1295efc8353 |
| |
| 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-2025-22012 |
| 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: |
| arch/arm64/boot/dts/qcom/sdm845.dtsi |
| |
| |
| 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/9e6e9fc90258a318d30b417bcccda908bb82ee9d |
| https://git.kernel.org/stable/c/f00db31d235946853fb430de8c6aa1295efc8353 |
