| 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-2024-53225: iommu/tegra241-cmdqv: Fix alignment failure at max_n_shift |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| iommu/tegra241-cmdqv: Fix alignment failure at max_n_shift |
| |
| When configuring a kernel with PAGE_SIZE=4KB, depending on its setting of |
| CONFIG_CMA_ALIGNMENT, VCMDQ_LOG2SIZE_MAX=19 could fail the alignment test |
| and trigger a WARN_ON: |
| WARNING: at drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:3646 |
| Call trace: |
| arm_smmu_init_one_queue+0x15c/0x210 |
| tegra241_cmdqv_init_structures+0x114/0x338 |
| arm_smmu_device_probe+0xb48/0x1d90 |
| |
| Fix it by capping max_n_shift to CMDQ_MAX_SZ_SHIFT as SMMUv3 CMDQ does. |
| |
| The Linux kernel CVE team has assigned CVE-2024-53225 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.12 with commit 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 and fixed in 6.12.2 with commit 85a1d70b86dbcb84a68e7e4942a5181276945988 |
| Issue introduced in 6.12 with commit 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 and fixed in 6.13 with commit a3799717b881aa0f4e722afb70e7b8ba84ae4f36 |
| |
| 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-2024-53225 |
| 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/iommu/arm/arm-smmu-v3/tegra241-cmdqv.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/85a1d70b86dbcb84a68e7e4942a5181276945988 |
| https://git.kernel.org/stable/c/a3799717b881aa0f4e722afb70e7b8ba84ae4f36 |
