pe-binary: fix "systemd-sbsign calculates wrong PE checksum"

2026-05-12 14:15:05 +02:00
parent 0b8b2af657
commit 1ea3359793
1 changed files with 2 additions and 1 deletions
@@ -487,7 +487,8 @@ int pe_checksum(int fd, uint32_t *ret) {
                        return log_debug_errno(SYNTHETIC_ERRNO(EIO), "Short read from PE file");

                for (size_t i = 0; i < (size_t) n / 2; i++) {
-                        if (off + i >= checksum_offset && off + i < checksum_offset + sizeof(pe_header->optional.CheckSum))
+                        size_t pos = off + i * sizeof(uint16_t);
+                        if (pos >= checksum_offset && pos < checksum_offset + sizeof(pe_header->optional.CheckSum))
                                continue;

                        uint16_t val = le16toh(buf[i]);