IT

Tracker / CVE-2024-40945

CVE-2024-40945

Medium 5.5

In the Linux kernel, the following vulnerability has been resolved: iommu: Return right value in iommu_sva_bind_device() iommu_sva_bind_device() should return either a sva bond handle or an ERR_PTR value in error cases. Existing drivers (idxd and uacce) only check the return value with IS_ERR(). This could potentially lead to a kernel NULL pointer dereference issue if the function returns NULL instead of an error pointer. In reality, this doesn't cause any problems because iommu_sva_bind_device() only returns NULL when the kernel is not configured with CONFIG_IOMMU_SVA. In this case, iommu_dev_enable_feature(dev, IOMMU_DEV_FEAT_SVA) will return an error, and the device drivers won't call iommu_sva_bind_device() at all.

Affected products and versions

linux linux_kernel
linux linux_kernel · 5.11 → 5.15.162
linux linux_kernel · 5.16 → 6.6.35
linux linux_kernel · 5.2 → 5.4.279
linux linux_kernel · 5.5 → 5.10.221
linux linux_kernel · 6.7 → 6.9.6

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References