CVE catalog
CVE-2021-43313
DEBIAN-CVE-2021-43313
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.82% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | upx-ucl | 13 | 4.2.2-1 | fixed |
| Debian | upx-ucl | 14 | 4.2.2-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | upx-ucl | deb | 13 | 4.2.2-1 | Not reported | DEBIAN-CVE-2021-43313 | Not reported |
| Debian | upx-ucl | deb | 14 | 4.2.2-1 | Not reported | DEBIAN-CVE-2021-43313 | Not reported |
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [upx-ucl]Fixed
Details (2)
4.2.4-1.1· amd64 · trixieFixed · Fixed:
4.2.2-1pypi · upx-ucl · debian · 13
4.2.4-1.1· arm64 · trixieFixed · Fixed:
4.2.2-1pypi · upx-ucl · debian · 13
Observed: