Riskcovery

CVE-2026-90425

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

State
Published
Severity
8.8 High
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 to before 9b37afb2d34d99ec4f8db28134181b5a8ec9a4a5Affected
  • 4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 to before 0b139ec4641c7d4163d8e345c26cc630e24fa43bAffected
  • 4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 to before fb292bfc9be936dade7eef7ec5762de1201983d8Affected
LinuxLinux
  • 6.17Affected
  • before 6.17Not affected
  • 6.18.52 through 6.18.*Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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