CVE-2022-28734 (grub2)

Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.

buffer code corruption cve data grub2 handling headers http internal out-of-bounds out-of-bounds write packets parsing point request writing