CVE-2026-89619 HID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer
A buffer overflow in the Intel THC HID QuickSPI driver allows a malicious device to corrupt kernel memory, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-89619?
CVE-2026-89619 is a high-severity memory corruption vulnerability in Linux, published on 11 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
HID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer
quickspi_hid_raw_request() receives the caller's buffer length in len, but quickspi_get_report() never sees it and copies the whole device-supplied response into buf regardless:
memcpy(buf, qsdev->report_buf, qsdev->report_len);
qsdev->report_len comes from the input report the touch controller returns, while buf is sized to whatever the caller asked hidraw for through HIDIOCGFEATURE or HIDIOCGINPUT. A response larger than that overflows buf with device-controlled content.
The intel-quicki2c sibling already passes the caller length down to quicki2c_get_report() and validates the response against it before the copy. Do the same here.
Which versions are affected by CVE-2026-89619?
How do I fix CVE-2026-89619?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-89619 being exploited?
There is no known exploitation of CVE-2026-89619 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-89619, DEBIAN-CVE-2026-89619, GHSA-mjmr-px5q-jfhp, UBUNTU-CVE-2026-89619.