CVE-2025-21800

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

net/mlx5: HWS, fix definer’s HWS_SET32 macro for negative offset

When bit offset for HWS_SET32 macro is negative,
UBSAN complains about the shift-out-of-bounds:

UBSAN: shift-out-of-bounds in
drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2
shift exponent -8 is negative

More information : https://git.kernel.org/stable/c/69c676c0ded472713e6d1b3a456b3c4f52f66f0e