CVE-2026-23132

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

drm/bridge: synopsys: dw-dp: fix error paths of dwdpbind

Fix several issues in dwdpbind() error handling:

1. Missing return after drmbridgeattach() failure - the function continued execution instead of returning an error.

2. Resource leak: drmdpauxregister() is not a devm function, so drmdpauxunregister() must be called on all error paths after aux registration succeeds. This affects errors from:

   • drmbridgeattach()
   • phy_init()
   • devmaddactionorreset()
   • platformgetirq()
   • devmrequestthreaded_irq()

3. Bug fix: platformgetirq() returns the IRQ number or a negative error code, but the error path was returning ERRPTR(ret) instead of ERRPTR(dp->irq).

Use a goto label for cleanup to ensure consistent error handling.