EUVD-2026-55277

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix mmiotrace possible NULL dereferencing of hiter-dev If the mmiopipeopen fails to find a PCI device, the hiter-dev will be assigned to NULL. The mmiotrace read function dereferences the hiter-dev if hiter exists. Chang...

CVE-2026-68176

The CVE-2026-68176 entry concerns the Linux kernel tracing subsystem (mmiotrace) where a NULL dereference could occur if mmio_pipe_open() fails to locate a PCI device and hiter->dev is NULL. The read() path previously dereferenced hiter->dev without verifying it; the fix adds a check for hi...

EUVD-2026-55276

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix resource leak on mmiotrace tracepipe close The mmiotrace tracer was added May 12th 2008. At that time, resources created in pipeopen could not be freed because there was not pipeclose function pointer of the tracer...