| 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-2024-56618: pmdomain: imx: gpcv2: Adjust delay after power up handshake |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| pmdomain: imx: gpcv2: Adjust delay after power up handshake |
| |
| The udelay(5) is not enough, sometimes below kernel panic |
| still be triggered: |
| |
| [ 4.012973] Kernel panic - not syncing: Asynchronous SError Interrupt |
| [ 4.012976] CPU: 2 UID: 0 PID: 186 Comm: (udev-worker) Not tainted 6.12.0-rc2-0.0.0-devel-00004-g8b1b79e88956 #1 |
| [ 4.012982] Hardware name: Toradex Verdin iMX8M Plus WB on Dahlia Board (DT) |
| [ 4.012985] Call trace: |
| [...] |
| [ 4.013029] arm64_serror_panic+0x64/0x70 |
| [ 4.013034] do_serror+0x3c/0x70 |
| [ 4.013039] el1h_64_error_handler+0x30/0x54 |
| [ 4.013046] el1h_64_error+0x64/0x68 |
| [ 4.013050] clk_imx8mp_audiomix_runtime_resume+0x38/0x48 |
| [ 4.013059] __genpd_runtime_resume+0x30/0x80 |
| [ 4.013066] genpd_runtime_resume+0x114/0x29c |
| [ 4.013073] __rpm_callback+0x48/0x1e0 |
| [ 4.013079] rpm_callback+0x68/0x80 |
| [ 4.013084] rpm_resume+0x3bc/0x6a0 |
| [ 4.013089] __pm_runtime_resume+0x50/0x9c |
| [ 4.013095] pm_runtime_get_suppliers+0x60/0x8c |
| [ 4.013101] __driver_probe_device+0x4c/0x14c |
| [ 4.013108] driver_probe_device+0x3c/0x120 |
| [ 4.013114] __driver_attach+0xc4/0x200 |
| [ 4.013119] bus_for_each_dev+0x7c/0xe0 |
| [ 4.013125] driver_attach+0x24/0x30 |
| [ 4.013130] bus_add_driver+0x110/0x240 |
| [ 4.013135] driver_register+0x68/0x124 |
| [ 4.013142] __platform_driver_register+0x24/0x30 |
| [ 4.013149] sdma_driver_init+0x20/0x1000 [imx_sdma] |
| [ 4.013163] do_one_initcall+0x60/0x1e0 |
| [ 4.013168] do_init_module+0x5c/0x21c |
| [ 4.013175] load_module+0x1a98/0x205c |
| [ 4.013181] init_module_from_file+0x88/0xd4 |
| [ 4.013187] __arm64_sys_finit_module+0x258/0x350 |
| [ 4.013194] invoke_syscall.constprop.0+0x50/0xe0 |
| [ 4.013202] do_el0_svc+0xa8/0xe0 |
| [ 4.013208] el0_svc+0x3c/0x140 |
| [ 4.013215] el0t_64_sync_handler+0x120/0x12c |
| [ 4.013222] el0t_64_sync+0x190/0x194 |
| [ 4.013228] SMP: stopping secondary CPUs |
| |
| The correct way is to wait handshake, but it needs BUS clock of |
| BLK-CTL be enabled, which is in separate driver. So delay is the |
| only option here. The udelay(10) is a data got by experiment. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56618 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit e8dc41afca161b988e6d462f4d0803d247e22250 and fixed in 6.12.5 with commit a63907c8c712414643b597debcd09d16b6827b23 |
| Issue introduced in 6.10 with commit e8dc41afca161b988e6d462f4d0803d247e22250 and fixed in 6.13 with commit 2379fb937de5333991c567eefd7d11b98977d059 |
| |
| 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-2024-56618 |
| 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/pmdomain/imx/gpcv2.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/a63907c8c712414643b597debcd09d16b6827b23 |
| https://git.kernel.org/stable/c/2379fb937de5333991c567eefd7d11b98977d059 |
