| 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-2023-52693: ACPI: video: check for error while searching for backlight device parent |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ACPI: video: check for error while searching for backlight device parent |
| |
| If acpi_get_parent() called in acpi_video_dev_register_backlight() |
| fails, for example, because acpi_ut_acquire_mutex() fails inside |
| acpi_get_parent), this can lead to incorrect (uninitialized) |
| acpi_parent handle being passed to acpi_get_pci_dev() for detecting |
| the parent pci device. |
| |
| Check acpi_get_parent() result and set parent device only in case of success. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52693 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 4.19.306 with commit 556f02699d33c1f40b1b31bd25828ce08fa165d8 |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 5.4.268 with commit 1e3a2b9b4039bb4d136dca59fb31e06465e056f3 |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 5.10.209 with commit c4e1a0ef0b4782854c9b77a333ca912b392bed2f |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 5.15.148 with commit 3a370502a5681986f9828e43be75ce26c6ab24af |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 6.1.75 with commit 2124c5bc22948fc4d09a23db4a8acdccc7d21e95 |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 6.6.14 with commit 39af144b6d01d9b40f52e5d773e653957e6c379c |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 6.7.2 with commit 72884ce4e10417b1233b614bf134da852df0f15f |
| Issue introduced in 2.6.39 with commit 9661e92c10a9775243c1ecb73373528ed8725a10 and fixed in 6.8 with commit ccd45faf4973746c4f30ea41eec864e5cf191099 |
| |
| 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-2023-52693 |
| 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/acpi/acpi_video.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/556f02699d33c1f40b1b31bd25828ce08fa165d8 |
| https://git.kernel.org/stable/c/1e3a2b9b4039bb4d136dca59fb31e06465e056f3 |
| https://git.kernel.org/stable/c/c4e1a0ef0b4782854c9b77a333ca912b392bed2f |
| https://git.kernel.org/stable/c/3a370502a5681986f9828e43be75ce26c6ab24af |
| https://git.kernel.org/stable/c/2124c5bc22948fc4d09a23db4a8acdccc7d21e95 |
| https://git.kernel.org/stable/c/39af144b6d01d9b40f52e5d773e653957e6c379c |
| https://git.kernel.org/stable/c/72884ce4e10417b1233b614bf134da852df0f15f |
| https://git.kernel.org/stable/c/ccd45faf4973746c4f30ea41eec864e5cf191099 |
