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Fencer Intel
medium 6.5

CVE-2019-6129 json

png_create_info_struct in png.c in libpng 1.6.36 has a memory leak, as demonstrated by pngcp.

published 7y ago modified 4mo ago also EUVD-2019-15696

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

png_create_info_struct in png.c in libpng 1.6.36 has a memory leak, as demonstrated by pngcp. NOTE: a third party has stated "I don't think it is libpng's job to free this buffer.

Patch / fix

  • libpng1.6 Debian 14, Debian 13, Debian 12 1.6.39-1

debian advisories DEBIAN-CVE-2019-6129

  • libpng16 openSUSE Tumbleweed 1.6.40-2.1

opensuse advisories openSUSE-SU-2024:13577-1

Is CVE-2019-6129 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2019-6129 updated cvss 3.3

libpng: memory leak of png_info struct in pngcp.c

  • Red Hat Enterprise Linux 5 libpng Red Hat Enterprise Linux 6 libpng Red Hat Enterprise Linux 7 libpng, libpng12 Red Hat Enterprise Linux 8 libpng, libpng12, mingw-libpng, mingw32-libpng, mingw64-libpng
    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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
5mo ago

Exploit prediction

1.60% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/glennrp/libpng/issues/269 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.0 6.5 CVSS:3.0/AV:N/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-401 Missing Release of Memory after Effective Lifetime

References

Sources

Fencer Intel 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.