CVE-2020-27801
Fixed in a distro release EPSS <1%
A heap-based buffer over-read was discovered in the get_le64 function in bele.h in UPX 4.0.0 via a crafted Mach-O file.
Products: upx
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 13 | upx-ucl | 4.2.2-1 |
| Debian 14 | upx-ucl | 4.2.2-1 |
| Ubuntu 16.04 LTS | upx-ucl | no fix |
| Ubuntu 18.04 LTS | upx-ucl | no fix |
| Ubuntu 20.04 LTS | upx-ucl | no fix |
| Ubuntu 22.04 LTS | upx-ucl | no fix |
| Ubuntu 24.04 LTS | upx-ucl | no fix |
| Ubuntu 25.10 | upx-ucl | no fix |
| Ubuntu 26.04 LTS | upx-ucl | no fix |
| Ubuntu 26.10 | upx-ucl | no fix |