kernel: HID: core: Harden s32ton() against conversion to 0 bits

In the Linux kernel, the following vulnerability has been resolved: HID: core: Harden s32ton against conversion to 0 bits Testing by the syzbot fuzzer showed that the HID core gets a shift-out-of-bounds exception when it tries to convert a 32-bit quantity to a 0-bit quantity. Ideally this should...

DEBIAN-CVE-2025-38556

In the Linux kernel, the following vulnerability has been resolved: HID: core: Harden s32ton against conversion to 0 bits Testing by the syzbot fuzzer showed that the HID core gets a shift-out-of-bounds exception when it tries to convert a 32-bit quantity to a 0-bit quantity. Ideally this should...

CVE-2025-38556

The Connected documents confirm CVE-2025-38556 affects the Linux kernel HID core, where the s32ton() conversion could crash when invoked with 0 bits. The fix HardenS32ton() so that it returns a reasonable result instead of faulting on 0-bit input, aligning behavior with snto32(). This CVE entry i...