| 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-2022-49306: usb: dwc3: host: Stop setting the ACPI companion |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: dwc3: host: Stop setting the ACPI companion |
| |
| It is no longer needed. The sysdev pointer is now used when |
| assigning the ACPI companions to the xHCI ports and USB |
| devices. |
| |
| Assigning the ACPI companion here resulted in the |
| fwnode->secondary pointer to be replaced also for the parent |
| dwc3 device since the primary fwnode (the ACPI companion) |
| was shared. That was unintentional and it created potential |
| side effects like resource leaks. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49306 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.17.15 with commit d7f35934f7ab67bfd9adabc84207e59da9c19108 |
| Fixed in 5.18.4 with commit 9c185fde906a48368bd2d2a8c17d4b6fb3d670af |
| Fixed in 5.19 with commit 7fd069d65da2e20b1caec3b7bcf9dfbe28c04bb2 |
| |
| 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-2022-49306 |
| 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/dwc3/host.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/d7f35934f7ab67bfd9adabc84207e59da9c19108 |
| https://git.kernel.org/stable/c/9c185fde906a48368bd2d2a8c17d4b6fb3d670af |
| https://git.kernel.org/stable/c/7fd069d65da2e20b1caec3b7bcf9dfbe28c04bb2 |
