| 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-2022-48852: drm/vc4: hdmi: Unregister codec device on unbind |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/vc4: hdmi: Unregister codec device on unbind |
| |
| On bind we will register the HDMI codec device but we don't unregister |
| it on unbind, leading to a device leakage. Unregister our device at |
| unbind. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48852 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.15.29 with commit ee22082c3e2f230028afa0e22aa8773b1de3c919 |
| Fixed in 5.16.15 with commit 1ed68d776246f167aee9cd79f63f089c40a5e2a3 |
| Fixed in 5.17 with commit e40945ab7c7f966d0c37b7bd7b0596497dfe228d |
| |
| 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-2022-48852 |
| 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/gpu/drm/vc4/vc4_hdmi.c |
| drivers/gpu/drm/vc4/vc4_hdmi.h |
| |
| |
| 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/ee22082c3e2f230028afa0e22aa8773b1de3c919 |
| https://git.kernel.org/stable/c/1ed68d776246f167aee9cd79f63f089c40a5e2a3 |
| https://git.kernel.org/stable/c/e40945ab7c7f966d0c37b7bd7b0596497dfe228d |
