| 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-2024-56682: irqchip/riscv-aplic: Prevent crash when MSI domain is missing |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| irqchip/riscv-aplic: Prevent crash when MSI domain is missing |
| |
| If the APLIC driver is probed before the IMSIC driver, the parent MSI |
| domain will be missing, which causes a NULL pointer dereference in |
| msi_create_device_irq_domain(). |
| |
| Avoid this by deferring probe until the parent MSI domain is available. Use |
| dev_err_probe() to avoid printing an error message when returning |
| -EPROBE_DEFER. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56682 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 and fixed in 6.12.2 with commit 285a07810ab3bcedc2bd380ebacbf6b4942a889a |
| Issue introduced in 6.10 with commit ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 and fixed in 6.13 with commit 1f181d1cda56c2fbe379c5ace1aa1fac6306669e |
| |
| 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-2024-56682 |
| 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/irqchip/irq-riscv-aplic-main.c |
| drivers/irqchip/irq-riscv-aplic-msi.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/285a07810ab3bcedc2bd380ebacbf6b4942a889a |
| https://git.kernel.org/stable/c/1f181d1cda56c2fbe379c5ace1aa1fac6306669e |
