CVE-2022-48894

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3: Don't unregister on shutdown 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' DMA API calls, or worse. Instead of calling the full arm_smmu_device_remove() from arm_smmu_device_shutdown(), let'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.

The following products are affected by CVE-2022-48894 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-48894.

URL	Resource
https://git.kernel.org/stable/c/32ea2c57dc216b6ad8125fa680d31daa5d421c95
https://git.kernel.org/stable/c/ead3e6c79479890444c777fd329afc125fecde48
https://lore.kernel.org/linux-cve-announce/2024082110-CVE-2022-48894-7997@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-48894
https://www.cve.org/CVERecord?id=CVE-2022-48894