| 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-2024-50075: xhci: tegra: fix checked USB2 port number |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| xhci: tegra: fix checked USB2 port number |
| |
| If USB virtualizatoin is enabled, USB2 ports are shared between all |
| Virtual Functions. The USB2 port number owned by an USB2 root hub in |
| a Virtual Function may be less than total USB2 phy number supported |
| by the Tegra XUSB controller. |
| |
| Using total USB2 phy number as port number to check all PORTSC values |
| would cause invalid memory access. |
| |
| [ 116.923438] Unable to handle kernel paging request at virtual address 006c622f7665642f |
| ... |
| [ 117.213640] Call trace: |
| [ 117.216783] tegra_xusb_enter_elpg+0x23c/0x658 |
| [ 117.222021] tegra_xusb_runtime_suspend+0x40/0x68 |
| [ 117.227260] pm_generic_runtime_suspend+0x30/0x50 |
| [ 117.232847] __rpm_callback+0x84/0x3c0 |
| [ 117.237038] rpm_suspend+0x2dc/0x740 |
| [ 117.241229] pm_runtime_work+0xa0/0xb8 |
| [ 117.245769] process_scheduled_works+0x24c/0x478 |
| [ 117.251007] worker_thread+0x23c/0x328 |
| [ 117.255547] kthread+0x104/0x1b0 |
| [ 117.259389] ret_from_fork+0x10/0x20 |
| [ 117.263582] Code: 54000222 f9461ae8 f8747908 b4ffff48 (f9400100) |
| |
| The Linux kernel CVE team has assigned CVE-2024-50075 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.3 with commit a30951d31b250bf3479c00e93646b6cc6fb42a56 and fixed in 6.6.58 with commit 9c696bf4ab54c7cec81221887564305f0ceeac0a |
| Issue introduced in 6.3 with commit a30951d31b250bf3479c00e93646b6cc6fb42a56 and fixed in 6.11.5 with commit c46555f14b71f95a447f5d49fc3f1f80a1472da2 |
| Issue introduced in 6.3 with commit a30951d31b250bf3479c00e93646b6cc6fb42a56 and fixed in 6.12 with commit 7d381137cb6ecf558ef6698c7730ddd482d4c8f2 |
| |
| 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-2024-50075 |
| 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/usb/host/xhci-tegra.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/9c696bf4ab54c7cec81221887564305f0ceeac0a |
| https://git.kernel.org/stable/c/c46555f14b71f95a447f5d49fc3f1f80a1472da2 |
| https://git.kernel.org/stable/c/7d381137cb6ecf558ef6698c7730ddd482d4c8f2 |
