| 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-2023-52861: drm: bridge: it66121: Fix invalid connector dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm: bridge: it66121: Fix invalid connector dereference |
| |
| Fix the NULL pointer dereference when no monitor is connected, and the |
| sound card is opened from userspace. |
| |
| Instead return an empty buffer (of zeroes) as the EDID information to |
| the sound framework if there is no connector attached. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52861 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit e0fd83dbe92426e4f09b01111d260d2a7dc72fdb and fixed in 6.1.63 with commit 2c80c4f0d2845645f41cbb7c9304c8efbdbd4331 |
| Issue introduced in 5.19 with commit e0fd83dbe92426e4f09b01111d260d2a7dc72fdb and fixed in 6.5.12 with commit 1669d7b21a664aa531856ce85b01359a376baebc |
| Issue introduced in 5.19 with commit e0fd83dbe92426e4f09b01111d260d2a7dc72fdb and fixed in 6.6.2 with commit 1374561a7cbc9a000b77bb0473bb2c19daf18d86 |
| Issue introduced in 5.19 with commit e0fd83dbe92426e4f09b01111d260d2a7dc72fdb and fixed in 6.7 with commit d0375f6858c4ff7244b62b02eb5e93428e1916cd |
| |
| 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-2023-52861 |
| 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/bridge/ite-it66121.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/2c80c4f0d2845645f41cbb7c9304c8efbdbd4331 |
| https://git.kernel.org/stable/c/1669d7b21a664aa531856ce85b01359a376baebc |
| https://git.kernel.org/stable/c/1374561a7cbc9a000b77bb0473bb2c19daf18d86 |
| https://git.kernel.org/stable/c/d0375f6858c4ff7244b62b02eb5e93428e1916cd |
