[S] Change in coreboot[main]: util/cbmem/cbmem.c: Avoid overflows when parsing TCG TPM logs

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Krystian Hebel, Michał Żygowski, Paul Menzel.

Sergii Dmytruk has posted comments on this change by Michał Żygowski. ( https://review.coreboot.org/c/coreboot/+/84926?usp=email )

Change subject: util/cbmem/cbmem.c: Avoid overflows when parsing TCG TPM logs
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Patch Set 3:

(1 comment)

File util/cbmem/cbmem.c:

https://review.coreboot.org/c/coreboot/+/84926/comment/0dd3af63_76a34834?usp... :
PS3, Line 999: 		if (current + len >= (uintptr_t)tpm2_log + size) {
`>=` looks weird here and above.  Maybe allow this case and add `tpm2_log - current >= sizeof(zero_block) + 4` to the condition of the loop?