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Fencer Vulns
high 8.1

CVE-2022-34299 json

There is a heap-based buffer over-read in libdwarf 0.4.0.

published 2022-06-22 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-37256

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

There is a heap-based buffer over-read in libdwarf 0.4.0. This issue is related to dwarf_global_formref_b.

Patch / fix

  • dwarfutils Debian 14, Debian 13 1:0.11.1-1

debian advisories DEBIAN-CVE-2022-34299

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-34299 updated cvss 7.1

libdwarf: heap buffer over-read in dwarf_global_formref_b() in dwarf_form.c

  • Red Hat Enterprise Linux 7 libdwarf, libdwarf-tools Red Hat Enterprise Linux 8 libdwarf, libdwarf-tools
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.43% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/davea42/libdwarf-code/issues/119 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

Classification

Weakness

References

Sources

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.