Improper input validation in Linux kernel - CVE-2026-98165
Published: October 15, 2026
Vulnerability identifier: #VU155946
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98165
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to use the BAR0 fallback read path outside its intended device context.
The vulnerability exists due to insufficient validation of device type in amdgpu_device_read_fb_via_bar0() when reading framebuffer data through BAR0. A local user can use the fallback path on devices that are not SR-IOV virtual functions to use the BAR0 fallback read path outside its intended device context.
SR-IOV virtual functions may lack an available VRAM aperture during early initialization.
Affected software
Linux kernel
How to mitigate CVE-2026-98165
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3