Falhas do tipo CWE-190

1.956 resultados

Estouro ou Envolvimento de Inteiro

Ocorre quando uma operação aritmética produz um valor que excede o limite máximo (ou mínimo) que o tipo de dado inteiro pode armazenar, causando o valor envolver-se para o lado oposto ou comportamento inesperado. Isso permite que atacantes contornem validações, aloquem memória inadequada, ou causem travamentos ao explorar essa descontinuidade.

Exemplo

Um servidor de upload limita arquivos a 2 GB verificando se size < 2147483648 (INT_MAX). Um atacante envia size=2147483648, que em inteiro de 32 bits assinado vira -2147483648. A validação passa, mas durante a alocação de buffer o sistema trata como valor negativo ou inesperado, causando falha ou bypass de proteção.

Como mitigar

Use tipos inteiros sem sinal (unsigned) ou de maior capacidade (64 bits) quando apropriado; valide entradas contra limites explícitos *antes* de operações aritméticas; utilize funções de verificação de overflow fornecidas pela linguagem ou biblioteca (ex: __builtin_add_overflow em C, SafeInt em .NET); evite conversões implícitas entre tipos.

CVE-2021-33631MEDIUMKernel crash in EXT4 filesystemEPSS 0.4%CVE-2026-49346HIGHlibde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflowEPSS 0.4%CVE-2026-21485HIGHiccDEV Undefined Behavior (UB) and Out of Memory in CIccProfile::LoadTag()EPSS 0.4%CVE-2026-83601MEDIUMNetdata: Streaming protocol dimension slot has no upper-bound guard, allowing integer overflow and out-of-bounds writeEPSS 0.4%CVE-2022-0998—An integer overflow flaw was found in the Linux kernel’s virtio device driver code in the way a user triggers the vhost_vdpa_config_validateEPSS 0.4%CVE-2024-34139HIGHAdobe Bridge has an integer overflow vulnerability when parsing SVG fileEPSS 0.4%CVE-2024-47416HIGHAnimate | Integer Overflow or Wraparound (CWE-190)EPSS 0.4%CVE-2026-55400MEDIUMCVE-2026-55400 is an integer underflow in Secure Access servers prior to version 14.57. Attackers with an authenticated session can send sEPSS 0.4%CVE-2026-43907HIGHOpenImageIO: Integer overflow in QueryRGBBufferSizeInternal leads to heap out-of-bounds write in DPX decoder (kCbYCr and kABGR)EPSS 0.4%CVE-2024-57254HIGHAn integer overflow in sqfs_inode_size in Das U-Boot before 2025.01-rc1 occurs in the symlink size calculation via a crafted squashfs filesyEPSS 0.4%CVE-2022-48468MEDIUMprotobuf-c before 1.4.1 has an unsigned integer overflow in parse_required_member.EPSS 0.4%CVE-2019-10142HIGHA flaw was found in the Linux kernel's freescale hypervisor manager implementation, kernel versions 5.0.x up to, excluding 5.0.17. A parametEPSS 0.4%CVE-2026-62897HIGH.NET Framework Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-57255HIGHAn integer overflow in sqfs_resolve_symlink in Das U-Boot before 2025.01-rc1 occurs via a crafted squashfs filesystem with an inode size of EPSS 0.4%CVE-2025-58749LOWWAMR runtime hangs or crashes with large memory.fill addresses in LLVM-JIT modeEPSS 0.4%CVE-2026-102633HIGHlibexpat 2.7.2 through 2.8.5 Integer Overflow in expat_reallocEPSS 0.4%CVE-2026-21688HIGHiccDEV has Type Confusion in SIccCalcOp::ArgsPushed() at IccProfLib/IccMpeCalc.cppEPSS 0.4%CVE-2024-34121HIGHIllustrator | Integer Overflow or Wraparound (CWE-190)EPSS 0.4%CVE-2026-16554MEDIUMInteger Overflow Leading to Heap Buffer Overflow in cJSONEPSS 0.4%CVE-2026-47857MEDIUMReactor Core windowTimeout fair-backpressure stream hang due to 20-bit index wrap-aroundEPSS 0.4%