Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
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 anERR_PTR value in error cases. Existing drivers (idxd and uacce) onlycheck the return value with IS_ERR(). This could potentially lead toa kernel NULL pointer dereference issue if the function returns NULLinstead 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) willreturn an error, and the device drivers won't call iommu_sva_bind_device()at all.
No PoCs from references.
- https://github.com/w4zu/Debian_security