libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and…
Priority LOW 30CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00787 56th percentileScored 2026-11-08
Fix Will not fix Red Hat: no fix planned
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libdwarf_project:libdwarf:*:*:*:*:*:*:*:* | before 2020-12-01 | Vulnerable | Libdwarf Project |
- cpe:2.3:a:libdwarf_project:libdwarf:*:*:*:*:*:*:*:* Versions before 2020-12-01 Vulnerable ·Libdwarf Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28163
- 2026-10-03 Alias added: GHSA-7732-hqr2-cr7r
References
Advisory 2
More Libdwarf Project Libdwarf vulnerabilities
- TI-2016-07781 (1) libdwarf/dwarf_leb.c and (2) dwarfdump/print_frames.c in libdwarf before 20161124… CVSS 3.1CRITICAL 9.8
- TI-2017-06517 An issue, also known as DW201703-006, was discovered in libdwarf 2017-03-21. CVSS 3.1CRITICAL 9.8
- TI-2017-06520 An issue, also known as DW201703-001, was discovered in libdwarf 2017-03-21. CVSS 3.1CRITICAL 9.8
- TI-2017-06519 An issue, also known as DW201703-002, was discovered in libdwarf 2017-03-21. CVSS 3.1CRITICAL 9.8
- TI-2016-07746 libdwarf 2016-10-21 allows context-dependent attackers to obtain sensitive information or… CVSS 3.0CRITICAL 9.1
- TI-2017-06518 An issue, also known as DW201703-005, was discovered in libdwarf 2017-03-21. CVSS 3.1CRITICAL 9.1
Sources
- CVE-2020-28163 · CVE Program
- CVE-2020-28163 · NVD
- FIRST EPSS
- GHSA-7732-hqr2-cr7r · GitHub Advisory Database · CC BY 4.0
- CVE-2020-28163 · Red Hat security data · CC BY 4.0
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