TristanInSec
08c281304c
The json_len variable is ssize_t, but the subtraction be64toh(header.hdr_len) - LUKS2_FIXED_HDR_SIZE can yield a value exceeding SSIZE_MAX when hdr_len is a large crafted value. This causes signed integer overflow and a subsequent oversized malloc() that fails with -ENOMEM, producing a misleading out-of-memory error. Add an explicit check against SSIZE_MAX before the cast to ssize_t.
System and Service Manager
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