CVE-2026-98205

In the Linux kernel, the following vulnerability has been resolved:

Input: evdev - zero absinfo before partial copy in EVIOCSABS

The EVIOCSABS handler copies at most the user supplied ioctl size into

an uninitialized on-stack struct input_absinfo:

if (copy_from_user(&abs, p, min_t(size_t,

size, sizeof(struct input_absinfo))))

The size comes from _IOC_SIZE() of the ioctl command and is therefore

fully controlled by userspace. A short size leaves the trailing part of

the structure holding whatever was on the kernel stack, and the whole

structure is then stored into the device:

dev->absinfo[t] = abs;

EVIOCGABS hands that back to userspace, disclosing the stale stack

bytes. Only the resolution field is currently cleared, which covers the

legacy struct layout but not an arbitrarily short size.

Zero the structure before the copy so any part not supplied by the

caller reads back as zero. The existing resolution fixup is kept, since

it also handles a size that partially overlaps that field.