CVE-2024-53225 iommu/tegra241-cmdqv: Fix alignment failure at max_n_shift
A misconfiguration in the Linux kernel's Tegra241 IOMMU driver can trigger a warning and potential system instability during initialization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-53225?
CVE-2024-53225 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2024-53225?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-53225?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-53225 being exploited?
There is no known exploitation of CVE-2024-53225 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-53225, DEBIAN-CVE-2024-53225, GHSA-x7jr-h454-h8h3, UBUNTU-CVE-2024-53225.