SB2026102397 - Type Confusion in Linux kernel input misc driver

Description

This security bulletin contains information about 1 vulnerability.

1) Type Confusion (CVE-ID: CVE-2026-99069)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to potentially cause a denial of service by triggering a kernel crash.

The vulnerability exists due to type confusion in the Linux kernel ati_remote2 driver's sysfs attribute handlers when processing reads or writes to the channel_mask and mode_mask attributes. A local user can access these attributes to trigger the incorrect conversion of a usb_interface device pointer into a usb_device pointer, leading to invalid pointer accesses that may crash the kernel.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2caae9d1977beea0a7914b3d86639262801fd116
• https://git.kernel.org/stable/c/d738e51bf2c21921df351f536147178ae3cbd38b
• https://git.kernel.org/stable/c/e44ec6b6d3c0b8ea089b589fa0cce49a4da66b89
• https://git.kernel.org/stable/c/f321cc430c49b6c1be0d53f2ef19d8342d8029cc