In the Linux kernel, the following vulnerability has been resolved:
accel/amdxdna: Use caller client for debug BO sync
amdxdnadrmsyncboioctl() looks up args->handle in the ioctl caller's drmfile. For SYNCDIRECTFROMDEVICE, it then calls amdxdnahwctxsyncdebugbo(), but passes abo->client.
amdxdnahwctxsyncdebugbo() uses the passed client both as the handle namespace for debugbohdl and as the owner of the hardware context xarray. Those must match the file that supplied args->handle. The BO's stored client pointer is object state, not the ioctl context.
Pass filp->driver_priv instead, matching the original handle lookup.
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72090.json"
}