oschwald/maxminddb-rust · Security
maxminddb's `Reader::open_mmap` unsoundly marks unsafe memmap operation as safe
- GHSA ID
- GHSA-mj73-j457-8x9q
- Severity
- low
- Published
- Updated
- CVSS v4
- 1 · CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Description
maxminddb prior to version 0.27 declared Reader::open_mmap as safe despite wrapping an inherently unsafe memmap2 operation with no extra step done to guarantee safety. This could have led to undefined behaviour if the file were to be modified on disk while the memory map was still active.
CWEs
- CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes