CVE-2021-43313

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-119 CWE-787

Affected software

Vendor	Product	Versions
n/a	upx	upx before 4.0.0-git-c6b9e3c62d15

References

https://github.com/upx/upx/issues/378Exploit, Issue Tracking, Patch
https://github.com/upx/upx/issues/378Exploit, Issue Tracking, Patch

Timeline

Published: Mar 24, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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