Falhas do tipo CWE-416

5.129 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar (ler ou escrever) um bloco de memória que já foi liberado (free, delete). O programa mantém um ponteiro para a memória, mas o sistema operacional pode reatribuir essa região para outro uso, causando corrupção de dados, travamento ou execução de código arbitrário.

Exemplo

Um servidor web aloca memória para armazenar dados de sessão do usuário, depois libera essa memória quando a sessão encerra. Se uma thread continuar tentando acessar essa sessão após a liberação, pode ler dados de outra sessão ou sobrescrever dados críticos de outro processo.

Como mitigar

Sempre anule ponteiros após liberar memória (ptr = NULL), use variáveis de controle para rastrear estado de alocação, implemente gerenciamento automático de memória quando possível (smart pointers em C++), e execute testes com sanitizers (AddressSanitizer, Valgrind) durante desenvolvimento e CI/CD.

CVE-2025-59215HIGHWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-51042HIGHIn the Linux kernel before 6.4.12, amdgpu_cs_wait_all_fences in drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c has a fence use-after-free.EPSS 0.3%CVE-2026-45751MEDIUMSuricata detect/transform: use-after-free in dotprefix transformEPSS 0.3%CVE-2026-7361HIGHUse after free in iOS in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to potentially exploit heap corruption via a crafteEPSS 0.3%CVE-2026-8580CRITICALUse after free in Mojo in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-14093CRITICALUse after free in Cast in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.3%CVE-2026-13782CRITICALUse after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to poteEPSS 0.3%CVE-2026-13026HIGHUse after free in Digital Credentials in Google Chrome on Mac prior to 149.0.7827.197 allowed a remote attacker to potentially exploit heap EPSS 0.3%CVE-2026-47310HIGHUse after free vulnerability in Samsung Open Source Escargot allows Pointer Manipulation. This issue affects Escargot: 590345cc6258317c5da8EPSS 0.3%CVE-2026-13783CRITICALUse after free in Views in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specific UI gestEPSS 0.3%CVE-2026-14099HIGHUse after free in Chrome for iOS in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in EPSS 0.3%CVE-2026-13784CRITICALUse after free in Views in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specific UI gestEPSS 0.3%CVE-2026-10013HIGHUse after free in WebCodecs in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox viEPSS 0.3%CVE-2026-7334HIGHUse after free in Views in Google Chrome on Mac prior to 147.0.7727.138 allowed a remote attacker to potentially exploit heap corruption viaEPSS 0.3%CVE-2026-9958HIGHUse after free in PDFium in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.3%CVE-2026-8511CRITICALUse after free in UI in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to potentially perform a sandbox escape via a crafteEPSS 0.3%CVE-2026-13775CRITICALUse after free in GPU in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentiaEPSS 0.3%CVE-2026-9874CRITICALUse after free in Dawn in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-7344HIGHUse after free in Accessibility in Google Chrome on Windows prior to 147.0.7727.138 allowed a remote attacker who had compromised the renderEPSS 0.3%CVE-2026-13785CRITICALUse after free in Bluetooth in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in speciEPSS 0.3%