Fallos del tipo CWE-416

5043 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2022-0443HIGHUse After Free in vim/vimEPSS 1.4%CVE-2023-35300HIGHRemote Procedure Call Runtime Remote Code Execution VulnerabilityEPSS 1.4%CVE-2020-1900—When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting EPSS 1.4%CVE-2023-34241MEDIUMCUPS vulnerable to use-after-free in cupsdAcceptClient()EPSS 1.4%CVE-2021-37179—A vulnerability has been identified in Solid Edge SE2021 (All Versions < SE2021MP7). The PSKERNEL.dll library in affected application lacks EPSS 1.4%CVE-2017-16732—A use-after-free issue was discovered in Advantech WebAccess versions prior to 8.3. WebAccess allows an unauthenticated attacker to specify EPSS 1.4%CVE-2024-49016HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.4%CVE-2023-32172MEDIUMUnified Automation UaGateway OPC UA Server Use-After-Free Denial-of-Service VulnerabilityEPSS 1.4%CVE-2023-2598HIGHA flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allEPSS 1.4%CVE-2021-3347HIGHAn issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing lEPSS 1.4%CVE-2019-11940—In the course of decompressing HPACK inside the HTTP2 protocol, an unexpected sequence of header table resize operations can place the headeEPSS 1.4%CVE-2022-46342HIGHA vulnerability was found in X.Org. This security flaw occurs because the handler for the XvdiSelectVideoNotify request may write to memory EPSS 1.4%CVE-2021-3974HIGHUse After Free in vim/vimEPSS 1.4%CVE-2021-39228MEDIUMMemory Safety Issue when using patch or merge on state and assign the result back to stateEPSS 1.3%CVE-2025-24983HIGHWindows Win32 Kernel Subsystem Elevation of Privilege VulnerabilityEPSS 1.3%KEVCVE-2023-29824CRITICALA use-after-free issue was discovered in Py_FindObjects() function in SciPy versions prior to 1.8.0. NOTE: the vendor and discoverer indicatEPSS 1.3%CVE-2011-0671HIGHUse-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows EPSS 1.3%CVE-2021-40399HIGHAn exploitable use-after-free vulnerability exists in WPS Spreadsheets ( ET ) as part of WPS Office, version 11.2.0.10351. A specially-craftEPSS 1.3%CVE-2022-2289HIGHUse After Free in vim/vimEPSS 1.3%CVE-2020-28594HIGHA use-after-free vulnerability exists in the _3MF_Importer::_handle_end_model() functionality of Prusa Research PrusaSlicer 2.2.0 and MasterEPSS 1.3%