Vulnerability-Lookup

BDU:2026-06672 (CVE-2026-34757)

Vulnerability from fstec – Published: 2026-05-13 – Updated: 2026-08-05 – View on bdu.fstec.ru Fixed

Title

Уязвимость библиотеки libpng, позволяющая нарушителю получить доступ к освобождённой памяти

Summary

Уязвимость библиотеки libpng связана с передачей указателя, полученного из функций png_get_PLTE, png_get_tRNS или png_get_hIST, обратно в соответствующую функцию установки значений для той же пары png_struct/png_info, что приводит к чтению из освобождённой памяти и копированию её содержимого в буфер замены. Функция установки значений освобождает внутренний буфер перед копированием из полученного от вызывающего объекта указателя, который впоследствии становится недействительным. Освобождённая область может содержать устаревшие данные, что приводит к незаметно повреждённым метаданным фрагментов, или данные из последующих операций выделения памяти в куче, что приводит к утечке несвязанного содержимого кучи в структуру фрагмента.

Severity

3.6 (Low) CVSS 2.0


                      
                        AV:L/AC:L/Au:N/C:P/I:P/A:N

5.1 (Medium) CVSS 3.1


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Being clarified

Incidents

Being clarified

Remediation

Software update

CWE

CWE-416 - Использование после освобождения

Aliases

CVE-2026-34757

References

10 references

URL
https://github.com/pnggroup/libpng/commit/398cbe3df03f4e11bb031e07f416dfdde3684e8a
https://github.com/pnggroup/libpng/commit/55d20aaa322c9274491cda82c5cd4f99b48c6bcc
https://github.com/pnggroup/libpng/issues/836
https://github.com/pnggroup/libpng/issues/837
https://github.com/pnggroup/libpng/security/advisories/GHSA-6fr7-g8h7-v645
https://security-tracker.debian.org/tracker/CVE-2026-34757
https://access.redhat.com/security/cve/cve-2026-34757
https://www.suse.com/security/cve/CVE-2026-34757.html
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34757/
http://repo.red-soft.ru/redos/8.0/x86_64/updates/

Impacted products

17 products from 8 vendors

Vendors

Red Hat, Inc., Novell Inc., Сообщество свободного программного обеспечения, ООО «Ред Софт», Жан-Лу Гайи, Марк Адлер, Guy Eric Schalnat Andreas Dilger Glenn Randers-Pehrson

Products

Red Hat Enterprise Linux, openSUSE Tumbleweed, Suse Linux Enterprise Server, Debian GNU/Linux, Red Hat build of OpenJDK, Red Hat OpenShift Container Platform, SUSE Linux Enterprise Server for SAP Applications, SUSE Linux Enterprise Micro, SUSE Linux Enterprise Server LTSS Extended Security, Suse Linux Enterprise Desktop, SUSE Manager Proxy, SUSE Manager Server, SUSE Linux Micro, OpenSUSE Leap, РЕД ОС (запись в едином реестре российских программ №3751), azl3 zlib, libpng

Versions

6 (Red Hat Enterprise Linux), 7 (Red Hat Enterprise Linux), 8 (Red Hat Enterprise Linux), - (openSUSE Tumbleweed), 12 SP4-LTSS (Suse Linux Enterprise Server), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 17 (Red Hat build of OpenJDK), 1.8 (Red Hat build of OpenJDK), 4 (Red Hat OpenShift Container Platform), 15 SP4 (SUSE Linux Enterprise Server for SAP Applications), 5.2 (SUSE Linux Enterprise Micro), 9 (Red Hat Enterprise Linux), 5.3 (SUSE Linux Enterprise Micro), 15 SP5 (SUSE Linux Enterprise Server for SAP Applications), 5.4 (SUSE Linux Enterprise Micro), 5.5 (SUSE Linux Enterprise Micro), 15 SP4-LTSS (Suse Linux Enterprise Server), 21 (Red Hat build of OpenJDK), 12 SP5-LTSS (Suse Linux Enterprise Server), 15 SP5-LTSS (Suse Linux Enterprise Server), 12 SP5 (SUSE Linux Enterprise Server LTSS Extended Security), 15 SP7 (Suse Linux Enterprise Desktop), 15 SP7 (Suse Linux Enterprise Server), 15 SP7 (SUSE Linux Enterprise Server for SAP Applications), 10 (Red Hat Enterprise Linux), LTS 4.3 (SUSE Manager Proxy), LTS 4.3 (SUSE Manager Server), 13 (Debian GNU/Linux), 6.0 (SUSE Linux Micro), 6.1 (SUSE Linux Micro), 16.0 (SUSE Linux Enterprise Server for SAP Applications), 16.0 (Suse Linux Enterprise Server), 16.0 (OpenSUSE Leap), 11 ELS (Red Hat build of OpenJDK), 25 (Red Hat build of OpenJDK), 8.0 (РЕД ОС), 6.2 (SUSE Linux Micro), 15 SP6-LTSS (Suse Linux Enterprise Server), 1.6.56-1 (azl3 zlib), от 1.0.9 до 1.6.57 (libpng)

Product types

Operating system, Application software

Platforms

Red Hat, Inc. Red Hat Enterprise Linux 6, Inc. Red Hat Enterprise Linux 7, Inc. Red Hat Enterprise Linux 8, Novell Inc. openSUSE Tumbleweed -, Novell Inc. Suse Linux Enterprise Server 12 SP4-LTSS, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, Novell Inc. SUSE Linux Enterprise Server for SAP Applications 15 SP4, Inc. Red Hat Enterprise Linux 9, Novell Inc. SUSE Linux Enterprise Server for SAP Applications 15 SP5, Novell Inc. Suse Linux Enterprise Server 15 SP4-LTSS, Novell Inc. Suse Linux Enterprise Server 12 SP5-LTSS, Novell Inc. Suse Linux Enterprise Server 15 SP5-LTSS, Novell Inc. Suse Linux Enterprise Desktop 15 SP7, Novell Inc. Suse Linux Enterprise Server 15 SP7, Novell Inc. SUSE Linux Enterprise Server for SAP Applications 15 SP7, Inc. Red Hat Enterprise Linux 10, Сообщество свободного программного обеспечения Debian GNU/Linux 13, Novell Inc. SUSE Linux Micro 6.0, Novell Inc. SUSE Linux Micro 6.1, Novell Inc. SUSE Linux Enterprise Server for SAP Applications 16.0, Novell Inc. Suse Linux Enterprise Server 16.0, Novell Inc. OpenSUSE Leap 16.0, ООО «Ред Софт» РЕД ОС 8.0 (запись в едином реестре российских программ №3751), Novell Inc. SUSE Linux Micro 6.2, Novell Inc. Suse Linux Enterprise Server 15 SP6-LTSS, Microsoft Corp Azure Linux 3.0

Mitigations

Использование рекомендаций: https://github.com/pnggroup/libpng/commit/398cbe3df03f4e11bb031e07f416dfdde3684e8a https://github.com/pnggroup/libpng/commit/55d20aaa322c9274491cda82c5cd4f99b48c6bcc https://github.com/pnggroup/libpng/issues/836 https://github.com/pnggroup/libpng/issues/837 https://github.com/pnggroup/libpng/security/advisories/GHSA-6fr7-g8h7-v645 Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/cve-2026-34757 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-34757 Для программных продуктов Novell Inc.: https://www.suse.com/security/cve/CVE-2026-34757.html Для Ред ОС: http://repo.red-soft.ru/redos/8.0/x86_64/updates/

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
  "CVSS 3.0": "AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., Novell Inc., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, \u0416\u0430\u043d-\u041b\u0443 \u0413\u0430\u0439\u0438, \u041c\u0430\u0440\u043a \u0410\u0434\u043b\u0435\u0440, Guy Eric Schalnat Andreas Dilger Glenn Randers-Pehrson",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "6 (Red Hat Enterprise Linux), 7 (Red Hat Enterprise Linux), 8 (Red Hat Enterprise Linux), - (openSUSE Tumbleweed), 12 SP4-LTSS (Suse Linux Enterprise Server), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 17 (Red Hat build of OpenJDK), 1.8 (Red Hat build of OpenJDK), 4 (Red Hat OpenShift Container Platform), 15 SP4 (SUSE Linux Enterprise Server for SAP Applications), 5.2 (SUSE Linux Enterprise Micro), 9 (Red Hat Enterprise Linux), 5.3 (SUSE Linux Enterprise Micro), 15 SP5 (SUSE Linux Enterprise Server for SAP Applications), 5.4 (SUSE Linux Enterprise Micro), 5.5 (SUSE Linux Enterprise Micro), 15 SP4-LTSS (Suse Linux Enterprise Server), 21 (Red Hat build of OpenJDK), 12 SP5-LTSS (Suse Linux Enterprise Server), 15 SP5-LTSS (Suse Linux Enterprise Server), 12 SP5 (SUSE Linux Enterprise Server LTSS Extended Security), 15 SP7 (Suse Linux Enterprise Desktop), 15 SP7 (Suse Linux Enterprise Server), 15 SP7 (SUSE Linux Enterprise Server for SAP Applications), 10 (Red Hat Enterprise Linux), LTS 4.3 (SUSE Manager Proxy), LTS 4.3 (SUSE Manager Server), 13 (Debian GNU/Linux), 6.0 (SUSE Linux Micro), 6.1 (SUSE Linux Micro), 16.0 (SUSE Linux Enterprise Server for SAP Applications), 16.0 (Suse Linux Enterprise Server), 16.0 (OpenSUSE Leap), 11 ELS (Red Hat build of OpenJDK), 25 (Red Hat build of OpenJDK), 8.0 (\u0420\u0415\u0414 \u041e\u0421), 6.2 (SUSE Linux Micro), 15 SP6-LTSS (Suse Linux Enterprise Server), 1.6.56-1 (azl3 zlib), \u043e\u0442 1.0.9 \u0434\u043e 1.6.57 (libpng)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://github.com/pnggroup/libpng/commit/398cbe3df03f4e11bb031e07f416dfdde3684e8a\nhttps://github.com/pnggroup/libpng/commit/55d20aaa322c9274491cda82c5cd4f99b48c6bcc\nhttps://github.com/pnggroup/libpng/issues/836\nhttps://github.com/pnggroup/libpng/issues/837\nhttps://github.com/pnggroup/libpng/security/advisories/GHSA-6fr7-g8h7-v645\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/cve-2026-34757\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-34757\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Novell Inc.:\nhttps://www.suse.com/security/cve/CVE-2026-34757.html\n\n\u0414\u043b\u044f \u0420\u0435\u0434 \u041e\u0421: http://repo.red-soft.ru/redos/8.0/x86_64/updates/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "09.04.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "05.08.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "13.05.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-06672",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-34757",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Red Hat Enterprise Linux, openSUSE Tumbleweed, Suse Linux Enterprise Server, Debian GNU/Linux, Red Hat build of OpenJDK, Red Hat OpenShift Container Platform, SUSE Linux Enterprise Server for SAP Applications, SUSE Linux Enterprise Micro, SUSE Linux Enterprise Server LTSS Extended Security, Suse Linux Enterprise Desktop, SUSE Manager Proxy, SUSE Manager Server, SUSE Linux Micro, OpenSUSE Leap, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), azl3 zlib, libpng",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Red Hat, Inc. Red Hat Enterprise Linux 6 , Red Hat, Inc. Red Hat Enterprise Linux 7 , Red Hat, Inc. Red Hat Enterprise Linux 8 , Novell Inc. openSUSE Tumbleweed - , Novell Inc. Suse Linux Enterprise Server 12 SP4-LTSS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , Novell Inc. SUSE Linux Enterprise Server for SAP Applications 15 SP4 , Red Hat, Inc. Red Hat Enterprise Linux 9 , Novell Inc. SUSE Linux Enterprise Server for SAP Applications 15 SP5 , Novell Inc. Suse Linux Enterprise Server 15 SP4-LTSS , Novell Inc. Suse Linux Enterprise Server 12 SP5-LTSS , Novell Inc. Suse Linux Enterprise Server 15 SP5-LTSS , Novell Inc. Suse Linux Enterprise Desktop 15 SP7 , Novell Inc. Suse Linux Enterprise Server 15 SP7 , Novell Inc. SUSE Linux Enterprise Server for SAP Applications 15 SP7 , Red Hat, Inc. Red Hat Enterprise Linux 10 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 13 , Novell Inc. SUSE Linux Micro 6.0 , Novell Inc. SUSE Linux Micro 6.1 , Novell Inc. SUSE Linux Enterprise Server for SAP Applications 16.0 , Novell Inc. Suse Linux Enterprise Server 16.0 , Novell Inc. OpenSUSE Leap 16.0 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 8.0  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Novell Inc. SUSE Linux Micro 6.2 , Novell Inc. Suse Linux Enterprise Server 15 SP6-LTSS , Microsoft Corp Azure Linux 3.0 ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libpng, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0441\u043b\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f (CWE-416)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libpng \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435\u0439 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f, \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0438\u0437 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 png_get_PLTE, png_get_tRNS \u0438\u043b\u0438 png_get_hIST, \u043e\u0431\u0440\u0430\u0442\u043d\u043e \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0442\u043e\u0439 \u0436\u0435 \u043f\u0430\u0440\u044b png_struct/png_info, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0447\u0442\u0435\u043d\u0438\u044e \u0438\u0437 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e \u0435\u0451 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0432 \u0431\u0443\u0444\u0435\u0440 \u0437\u0430\u043c\u0435\u043d\u044b. \u0424\u0443\u043d\u043a\u0446\u0438\u044f \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0430\u0435\u0442 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0438\u0439 \u0431\u0443\u0444\u0435\u0440 \u043f\u0435\u0440\u0435\u0434 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0438\u0437 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u043e\u0442 \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0438 \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f \u043d\u0435\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c. \u041e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u0430\u044f \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c \u0443\u0441\u0442\u0430\u0440\u0435\u0432\u0448\u0438\u0435 \u0434\u0430\u043d\u043d\u044b\u0435, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043d\u0435\u0437\u0430\u043c\u0435\u0442\u043d\u043e \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0451\u043d\u043d\u044b\u043c \u043c\u0435\u0442\u0430\u0434\u0430\u043d\u043d\u044b\u043c \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u043e\u0432, \u0438\u043b\u0438 \u0434\u0430\u043d\u043d\u044b\u0435 \u0438\u0437 \u043f\u043e\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 \u043a\u0443\u0447\u0435, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u043d\u0435\u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043a\u0443\u0447\u0438 \u0432 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u0430.",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://github.com/pnggroup/libpng/commit/398cbe3df03f4e11bb031e07f416dfdde3684e8a\nhttps://github.com/pnggroup/libpng/commit/55d20aaa322c9274491cda82c5cd4f99b48c6bcc\nhttps://github.com/pnggroup/libpng/issues/836\nhttps://github.com/pnggroup/libpng/issues/837\nhttps://github.com/pnggroup/libpng/security/advisories/GHSA-6fr7-g8h7-v645\nhttps://security-tracker.debian.org/tracker/CVE-2026-34757\nhttps://access.redhat.com/security/cve/cve-2026-34757\nhttps://www.suse.com/security/cve/CVE-2026-34757.html\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34757/\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-416",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041d\u0438\u0437\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 3,6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,1)"
}

CVE-2026-34757 (GCVE-0-2026-34757)

Vulnerability from cvelistv5 – Published: 2026-04-09 14:41 – Updated: 2026-05-09 10:21

Title

LIBPNG has a yse-after-free in png_set_PLTE, png_set_tRNS and png_set_hIST leading to corrupted chunk data and potential heap information disclosure

Summary

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.0.9 to before 1.6.57, passing a pointer obtained from png_get_PLTE, png_get_tRNS, or png_get_hIST back into the corresponding setter on the same png_struct/png_info pair causes the setter to read from freed memory and copy its contents into the replacement buffer. The setter frees the internal buffer before copying from the caller-supplied pointer, which now dangles. The freed region may contain stale data (producing silently corrupted chunk metadata) or data from subsequent heap allocations (leaking unrelated heap contents into the chunk struct). This vulnerability is fixed in 1.6.57.

Severity

5.1 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-09 16:07 UTC

CWE

CWE-416 - Use After Free

Assigner

GitHub_M mitre root

References

6 references

URL	Tags
https://github.com/pnggroup/libpng/security/advis…	x_refsource_CONFIRM
https://github.com/pnggroup/libpng/issues/836	x_refsource_MISC
https://github.com/pnggroup/libpng/issues/837	x_refsource_MISC
https://github.com/pnggroup/libpng/commit/398cbe3…	x_refsource_MISC
https://github.com/pnggroup/libpng/commit/55d20aa…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2026…

Impacted products

1 product

Vendor	Product	Version
pnggroup	libpng	Affected: >= 1.0.9, < 1.6.57

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34757",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-09T16:07:19.169786Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-09T16:07:31.052Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-05-09T10:21:48.394Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2026/05/msg00017.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libpng",
          "vendor": "pnggroup",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.0.9, \u003c 1.6.57"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.0.9 to before 1.6.57, passing a pointer obtained from png_get_PLTE, png_get_tRNS, or png_get_hIST back into the corresponding setter on the same png_struct/png_info pair causes the setter to read from freed memory and copy its contents into the replacement buffer. The setter frees the internal buffer before copying from the caller-supplied pointer, which now dangles. The freed region may contain stale data (producing silently corrupted chunk metadata) or data from subsequent heap allocations (leaking unrelated heap contents into the chunk struct). This vulnerability is fixed in 1.6.57."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-09T14:41:18.195Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/pnggroup/libpng/security/advisories/GHSA-6fr7-g8h7-v645",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-6fr7-g8h7-v645"
        },
        {
          "name": "https://github.com/pnggroup/libpng/issues/836",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/issues/836"
        },
        {
          "name": "https://github.com/pnggroup/libpng/issues/837",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/issues/837"
        },
        {
          "name": "https://github.com/pnggroup/libpng/commit/398cbe3df03f4e11bb031e07f416dfdde3684e8a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/commit/398cbe3df03f4e11bb031e07f416dfdde3684e8a"
        },
        {
          "name": "https://github.com/pnggroup/libpng/commit/55d20aaa322c9274491cda82c5cd4f99b48c6bcc",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pnggroup/libpng/commit/55d20aaa322c9274491cda82c5cd4f99b48c6bcc"
        }
      ],
      "source": {
        "advisory": "GHSA-6fr7-g8h7-v645",
        "discovery": "UNKNOWN"
      },
      "title": "LIBPNG has a yse-after-free in png_set_PLTE, png_set_tRNS and png_set_hIST leading to corrupted chunk data and potential heap information disclosure"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34757",
    "datePublished": "2026-04-09T14:41:18.195Z",
    "dateReserved": "2026-03-30T19:17:10.225Z",
    "dateUpdated": "2026-05-09T10:21:48.394Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2026-06672 (CVE-2026-34757)

CVE-2026-34757 (GCVE-0-2026-34757)

Tags

Sightings

Nomenclature

Related by attack behaviour