ALT-PU-2025-14978-1

Package update libpng16 in branch sisyphus_riscv64

Version1.6.51-alt1

Task#0

Published2025-11-24

Max severityHIGH

Severity:

Closed issues (5)

HIGH7.1

Уязвимость функции png_image_finish_read() библиотеки для работы с растровой графикой в формате PNG libpng, позволяющая нарушителю выполнить произвольный код

Published: 2025-11-24Modified: 2026-04-20

CVSS 3.xHIGH 7.1

CVSS:3.x/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

CVSS 2.0MEDIUM 6.6

CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:C/A:C

References

CVE-2025-65018

MEDIUM6.1

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.

Published: 2025-11-25Modified: 2025-11-26

CVSS 3.xMEDIUM 6.1

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References

MEDIUM6.1

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This issue has been patched in version 1.6.51.

Published: 2025-11-25Modified: 2025-11-26

CVSS 3.xMEDIUM 6.1

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References

HIGH7.1

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

Published: 2025-11-25Modified: 2025-11-26

CVSS 3.xHIGH 7.1

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References

HIGH7.1

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, there is a heap buffer overflow vulnerability in the libpng simplified API function png_image_finish_read when processing 16-bit interlaced PNGs with 8-bit output format. Attacker-crafted interlaced PNG files cause heap writes beyond allocated buffer bounds. This issue has been patched in version 1.6.51.

Published: 2025-11-25Modified: 2025-11-26

CVSS 3.xHIGH 7.1

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

References