Skip to content
CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-80559

Input: sur40 - fix input device registration ordering

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: Input: sur40 - fix input device registration ordering In sur40_probe(), input_register_device() was previously called early before the V4L2 video device and vb2_queue components were fully initialized. If userspace opened the input device immediately upon registration, sur40_open() would trigger and start the sur40_poll() worker thread. This worker thread invokes sur40_process_video() and accesses the uninitialized vb2_queue structure, leading to a data race and potential system crash. Furthermore, if V4L2 or video registration failed after input_register_device() succeeded, the error path fell through to calling input_free_device() on a successfully registered device instead of input_unregister_device(), corrupting input core state. Move input_register_device() to the very end of sur40_probe(). This ensures the V4L2 and video queue structures are fully initialized before polling can start, and naturally resolves the error path bug since input_free_device() is now only called when input registration has not yet occurred. To maintain strict LIFO (Last-In, First-Out) teardown ordering, also move input_unregister_device() to the very beginning of sur40_disconnect(). This guarantees that the input polling worker thread is stopped before V4L2 video components or control handlers are unregistered.

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

  • e831cd251fb91d6c25352d322743db0d17ea11dd to < cd4ecce2fd87760c0ad9a9d28c9fc62ea1dbfd3daffected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < dab741c9da72102a37cc1020a929051b7c45f9fbaffected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < 764b507be7b51787e1f577ca3bf0bab7efe81ff8affected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < 3e8ed76a4f3572e637653f0654cccdf617903231affected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < 83aa12f9f2468a4fbef027c09224dc1011850fb0affected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < 5c1c5227c93f18cd329dd754b4df5e0e2daece1eaffected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < beb9b0bd6e6e23f5e9e42b7ef890a50f57f1f3aaaffected
  • e831cd251fb91d6c25352d322743db0d17ea11dd to < 9da976eb649c9e2f588a4499410e4d8af687925faffected

Linux Linux

Default version status: affected

  • 4.1affected
  • 0 to < 4.1unaffected
  • 5.10.266 to ≤ 5.10.*unaffected
  • 5.15.217 to ≤ 5.15.*unaffected
  • 6.1.184 to ≤ 6.1.*unaffected
  • 6.6.153 to ≤ 6.6.*unaffected
  • 6.12.105 to ≤ 6.12.*unaffected
  • 6.18.46 to ≤ 6.18.*unaffected
  • 7.1.10 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References