Out-of-bounds write in Linux kernel - CVE-2026-98206
Published: October 7, 2026
Vulnerability identifier: #VU153815
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98206
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to corrupt kernel memory.
The vulnerability exists due to an out-of-bounds write in the cyttsp5 touchscreen driver's cyttsp5_handle_irq() function when handling device-supplied HID reports. A local user can provide a report with a size field exceeding the response buffer capacity to corrupt kernel memory.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-98206
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.113-1
linux (Debian package) - update to 6.12.113-1
External References
- https://git.kernel.org/stable/c/495955feb57750de4a641da13d7e51fb4d0a9764
- https://git.kernel.org/stable/c/85f080fb87ed5cd3e46121be677f52c82f26a0ab
- https://git.kernel.org/stable/c/9eb261092d4c967679fa351b7190c6d9082b07c5
- https://git.kernel.org/stable/c/b172c69e67bc71f71f6e3d8b3258b3dec29e42c6
- https://git.kernel.org/stable/c/d41a80d852f2948c6d388c520e76c0a72897f003