| From bippy-5f407fcff5a0 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-2024-50266: clk: qcom: videocc-sm8350: use HW_CTRL_TRIGGER for vcodec GDSCs |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| clk: qcom: videocc-sm8350: use HW_CTRL_TRIGGER for vcodec GDSCs |
| |
| A recent change in the venus driver results in a stuck clock on the |
| Lenovo ThinkPad X13s, for example, when streaming video in firefox: |
| |
| video_cc_mvs0_clk status stuck at 'off' |
| WARNING: CPU: 6 PID: 2885 at drivers/clk/qcom/clk-branch.c:87 clk_branch_wait+0x144/0x15c |
| ... |
| Call trace: |
| clk_branch_wait+0x144/0x15c |
| clk_branch2_enable+0x30/0x40 |
| clk_core_enable+0xd8/0x29c |
| clk_enable+0x2c/0x4c |
| vcodec_clks_enable.isra.0+0x94/0xd8 [venus_core] |
| coreid_power_v4+0x464/0x628 [venus_core] |
| vdec_start_streaming+0xc4/0x510 [venus_dec] |
| vb2_start_streaming+0x6c/0x180 [videobuf2_common] |
| vb2_core_streamon+0x120/0x1dc [videobuf2_common] |
| vb2_streamon+0x1c/0x6c [videobuf2_v4l2] |
| v4l2_m2m_ioctl_streamon+0x30/0x80 [v4l2_mem2mem] |
| v4l_streamon+0x24/0x30 [videodev] |
| |
| using the out-of-tree sm8350/sc8280xp venus support. [1] |
| |
| Update also the sm8350/sc8280xp GDSC definitions so that the hw control |
| mode can be changed at runtime as the venus driver now requires. |
| |
| The Linux kernel CVE team has assigned CVE-2024-50266 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.11 with commit ec9a652e514903df887791b669b70e86ab4e3ec5 and fixed in 6.11.8 with commit d055f6f2bdfb8b9c9bc071f748c16bd3afb2db0f |
| Issue introduced in 6.11 with commit ec9a652e514903df887791b669b70e86ab4e3ec5 and fixed in 6.12 with commit f903663a8dcd6e1656e52856afbf706cc14cbe6d |
| |
| 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-2024-50266 |
| 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/clk/qcom/videocc-sm8350.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/d055f6f2bdfb8b9c9bc071f748c16bd3afb2db0f |
| https://git.kernel.org/stable/c/f903663a8dcd6e1656e52856afbf706cc14cbe6d |
