CVE-2026-81012

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

platform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer()

hp_get_string_from_buffer() clamps the converted string length against

the destination buffer size with "size > dst_size", so when the

converted length is exactly equal to dst_size, conv_dst_size is left

at dst_size and the unconditional NUL terminator write

dst[conv_dst_size] = 0;

lands one byte past the destination buffer. This is the same shape of

bug as the previously fixed off-by-one in hp_convert_hexstr_to_str():

the buffer is sized correctly for the content, but the terminator

write is never checked against that size.

Fix by changing the comparison to ">=" so conv_dst_size is always left

with room for the terminator.

All fixed-size destinations that reach this function (path[512],

current_value[512], current_password/current_value[64], and the

per-entry buffers in encodings[][512] and prerequisites[][512]) are

affected.