A global buffer overflow issue in the dwarf::line_table::line_table function of Libelfin v0.3 allows attackers to cause a denial of service…

published 2021-08-04 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17533

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

A global buffer overflow issue in the dwarf::line_table::line_table function of Libelfin v0.3 allows attackers to cause a denial of service (DOS).

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/aclements/libelfin/issues/48 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/xiaoxiongwang/function_bugs/tree/master/libelfin#global-buffer-overflow-in-function-dwarfline_tableline_table-at-dwarflinecc107 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

github.com /aclements/libelfin/issues/48
exploit, issue-tracking, third-party-advisory
github.com /xiaoxiongwang/function_bugs/tree/master/libelfin#global-buffer-overflow-in-function-dwarfline_tableline_table
exploit, third-party-advisory

Sources

CVE List CVE-2020-24824
NVD CVE-2020-24824

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary