High severity7.5NVD Advisory· Published Mar 24, 2023· Updated Jun 17, 2026
CVE-2021-43311
CVE-2021-43311
Description
A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5382.
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Affected products
5- osv-coords2 versionspkg:rpm/opensuse/upx&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/upx&distro=SUSE%20Package%20Hub%2015%20SP4
< 4.0.2-bp154.4.6.1+ 1 more
- (no CPE)range: < 4.0.2-bp154.4.6.1
- (no CPE)range: < 4.0.2-bp154.4.6.1
Patches
Vulnerability mechanics
References
1- github.com/upx/upx/issues/380nvdExploitIssue TrackingPatch
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