CVE-2021-43313
Fixed in a distro release EPSS <1%
A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggered in the function PackLinuxElf32::invert_pt_dynamic at p_lx_elf.cpp:1688.
Products: upx
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 13 | upx-ucl | 4.2.2-1 |
| Debian 14 | upx-ucl | 4.2.2-1 |
| SUSE Package Hub 15 SP4 | upx | 4.0.2-bp154.4.6.1 |
| 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 |
| openSUSE Leap 15.4 | upx | 4.0.2-bp154.4.6.1 |