https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 12:40:47 +0000 https://vulnerability.circl.lu/vuln/cve-2022-48894 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>iommu/arm-smmu-v3: Don&#39;t unregister on shutdown</p> <p>Similar to SMMUv2, this driver calls iommu_device_unregister() from the shutdown path, which removes the IOMMU groups with no coordination whatsoever with their users - shutdown methods are optional in device drivers. This can lead to NULL pointer dereferences in those drivers&#39; DMA API calls, or worse.</p> <p>Instead of calling the full arm_smmu_device_remove() from arm_smmu_device_shutdown(), let&#39;s pick only the relevant function call - arm_smmu_device_disable() - more or less the reverse of arm_smmu_device_reset() - and call just that from the shutdown path.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>iommu/arm-smmu-v3: Don&#39;t unregister on shutdown</p> <p>Similar to SMMUv2, this driver calls iommu_device_unregister() from the shutdown path, which removes the IOMMU groups with no coordination whatsoever with their users - shutdown methods are optional in device drivers. This can lead to NULL pointer dereferences in those drivers&#39; DMA API calls, or worse.</p> <p>Instead of calling the full arm_smmu_device_remove() from arm_smmu_device_shutdown(), let&#39;s pick only the relevant function call - arm_smmu_device_disable() - more or less the reverse of arm_smmu_device_reset() - and call just that from the shutdown path.</p> https://vulnerability.circl.lu/vuln/cve-2022-48894