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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-90030

usb: dwc3: clear forceRM when issuing EndTransfer

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: clear forceRM when issuing EndTransfer The forceRM bit of the DEPCMD register controls the behavior of the EndTransfer command used to stop an active transfer. Older DWC3 programming guide revisions recommended setting forceRM=1 when issuing EndTransfer. Newer programming guide revisions recommend issuing EndTransfer with forceRM cleared. With forceRM=1 on DWC_usb31 v2.00a and v2.10a controllers, a transfer aborted through the ep_dequeue path was observed to remain active after EndTransfer completion. A subsequent StartTransfer issued on the same endpoint triggered writes associated with the aborted transfer. This resulted in an SMMU fault because the transfer buffer had already been unmapped during EndTransfer command-completion cleanup. Using forceRM=0 eliminates the issue. Although older DWC3 programming guide revisions recommended setting forceRM=1, no issues are known from using forceRM=0. Clear forceRM when issuing EndTransfer to provide consistent EndTransfer behavior and align with newer programming guide recommendations.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • ab99c4be945724b032cc55e05c6738fe1d84bf70 to < 7a50e138fa28e5ba76b11af66ed41cc300c0f2beaffected
  • 1e43c86d84fb0503e82a143e017f35421498fc1a to < 9f1e57c484f9edeaaa5a27a03ed985e98496e81daffected
  • 1e43c86d84fb0503e82a143e017f35421498fc1a to < 0afe5c31612de3d18cc6d16e616da4a48ba1e5a2affected
  • 1e43c86d84fb0503e82a143e017f35421498fc1a to < e01408ee52fe5cb2d0b43f47f359336af2b6c316affected
  • 1e43c86d84fb0503e82a143e017f35421498fc1a to < b58e6200450d350314db0ecda7d6d1bde3281e80affected
  • 6.6.37 to < 6.6.160affected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.51 to ≤ 6.18.*unaffected
  • 7.2.5 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References