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Vulnerability record · CVE-2020-28163 · published 16 April 2023

CVE-2020-28163: Libdwarf project libdwarf null pointer dereference vulnerability

LLibdwarf Project · Libdwarf

libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.

6.5 CVSS 3.1 Medium EPSS 0.79% · top 45.4% CWE-476 · NULL pointer dereference
6.5CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/ Product
https://bugzilla.redhat.com/show_bug.cgi?id=2026000 Issue TrackingPermissions RequiredThird Party Advisory
https://github.com/davea42/libdwarf-code/commit/faf99408e3f9f706fc3809dd400e831f989778d3 Patch
https://www.prevanders.net/dwarfbug.html#DW202010-003 Third Party Advisory
http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/ Product
https://bugzilla.redhat.com/show_bug.cgi?id=2026000 Issue TrackingPermissions RequiredThird Party Advisory
https://github.com/davea42/libdwarf-code/commit/faf99408e3f9f706fc3809dd400e831f989778d3 Patch
https://www.prevanders.net/dwarfbug.html#DW202010-003 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-28163), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.