CVE-2026-90425

Summary

In the Linux kernel, the following vulnerability has been resolved:

iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID

tegra241_vintf_init_vsid() maps a guest vSID to a single physical Stream ID taken from master->streams[0], and only warns when the device does not have exactly one stream. A device with several streams gets only its first one mapped, so a guest vSID invalidation cannot reach the others' ATC and IOTLB entries; a device with none makes master->streams a ZERO_SIZE_PTR, read out of bounds.

Reject the mapping with -EOPNOTSUPP if master->num_streams is not one.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 < 9b37afb2d34d99ec4f8db28134181b5a8ec9a4a5affected
LinuxLinux4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 < 0b139ec4641c7d4163d8e345c26cc630e24fa43baffected
LinuxLinux4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 < fb292bfc9be936dade7eef7ec5762de1201983d8affected
LinuxLinux6.17affected
LinuxLinux0 < 6.17unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References