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CVE-2026-54333

CVE-2026-54333 · UEFI Firmware Parser: Stack out-of-bounds write in tiano decompressor MakeTable

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

UEFI Firmware Parser parses BIOS, Intel ME, and UEFI firmware structures including volumes, file systems, and files. Prior to 1.14, MakeTable() in uefi_firmware/compression/Tiano/Decompress.c does not validate that bit-length values read from a crafted Tiano or EFI compressed firmware bitstream remain within the expected range from 0 through 16. The normal CompressedSection.process() to efi_compressor.TianoDecompress() to TianoDecompress() to ReadPTLen() to MakeTable() parsing path can consequently write beyond the stack-allocated Count[17] array and related decode tables. The resulting stack corruption deterministically crashes the parsing process and may permit code execution depending on build and runtime details. This issue is fixed in version 1.14.

CVSS 9.8 · Crítica · EPSS 0,8%

Publicación
Actualización

Pila tecnológica: python

Productos y versiones afectados

  • uefi-firmware-parser

    Versiones
    • < 1.14: Afectada

    Sin corrección publicada

  • uefi-firmware PyPI

    Versiones
    • 1.1
    • 1.10
    • 1.11
    • 1.2
    • 1.3
    • 1.4
    • 1.6
    • 1.7
    • 1.8
    • 1.9
    Intervalos de versiones afectados
    • ECOSYSTEM: ≤ 1.12

    Sin corrección publicada

Fuentes originales

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