CVE-2025-59729 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionWhen parsing the header for a DHAV file, there's an integer underflow in offset calculation that leads to reading the duration from before the start of the allocated buffer. If we load a DHAV file that is larger than MAX_DURATION_BUFFER_SIZE bytes (0x100000) for example 0x101000 bytes, then at [0] we have size = 0x101000. At [1] we have end_buffer_size = 0x100000, and at [2] we have end_buffer_pos = 0x1000. The loop then scans backwards through the buffer looking for the dhav tag; when it is found, we'll calculate end_pos based on a 32-bit offset read from the buffer. There is subsequently a check [3] that end_pos is within the section of the file that has been copied into end_buffer, but it only correctly handles the cases where end_pos is before the start of the file or after the section copied into end_buffer, and not the case where end_pos is within the the file, but before the section copied into end_buffer. If we provide such an offset, (end_pos - end_buffer_pos) can underflow, resulting in the subsequent access at [4] occurring before the beginning of the allocation. We recommend upgrading to version 8.0 or beyond. Metrics
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CVSS 4.0 Severity and Vector Strings:
CNA: Google Inc.
CVSS-B 5.7 MEDIUM
Vector: CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2025-59729 NVD Published Date: 10/06/2025 NVD Last Modified: 10/06/2025 Source: Google Inc. |
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