| 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-2024-56782: ACPI: x86: Add adev NULL check to acpi_quirk_skip_serdev_enumeration() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ACPI: x86: Add adev NULL check to acpi_quirk_skip_serdev_enumeration() |
| |
| acpi_dev_hid_match() does not check for adev == NULL, dereferencing |
| it unconditional. |
| |
| Add a check for adev being NULL before calling acpi_dev_hid_match(). |
| |
| At the moment acpi_quirk_skip_serdev_enumeration() is never called with |
| a controller_parent without an ACPI companion, but better safe than sorry. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56782 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.12.5 with commit e173bce05f7032a8b4964cfef82a4b7668f5f3af |
| Fixed in 6.13 with commit 4a49194f587a62d972b602e3e1a2c3cfe6567966 |
| |
| 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-2024-56782 |
| 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/x86/utils.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/e173bce05f7032a8b4964cfef82a4b7668f5f3af |
| https://git.kernel.org/stable/c/4a49194f587a62d972b602e3e1a2c3cfe6567966 |
