A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func getle32(). The problem is essentially caused in PackLinuxElf32::elflookup() at plxelf.cpp:5382.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43311.json"