Heap-Based Buffer Over-Read Vulnerability in libjpeg 1.63's HierarchicalBitmapRequester::FetchRegion

CVE-2022-31796 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

libjpeg 1.63 has a heap-based buffer over-read in HierarchicalBitmapRequester::FetchRegion in hierarchicalbitmaprequester.cpp because the MCU size can be different between allocation and use.

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