Falhas do tipo CWE-416

5.130 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-2026-9902HIGHUse after free in Accessibility in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process EPSS 0.3%CVE-2026-9931HIGHUse after free in GPU in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.3%CVE-2026-17650HIGHUse after free in Compositing in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to EPSS 0.3%CVE-2025-65405MEDIUMA use-after-free in the ADTSAudioFileSource::samplingFrequency() function of Live555 Streaming Media v2018.09.02 allows attackers to cause aEPSS 0.3%CVE-2026-19142HIGHUse after free in Views in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who convinced a user to engage in specific UI gesEPSS 0.3%CVE-2026-7956HIGHUse after free in Navigation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to pEPSS 0.3%CVE-2026-10990HIGHUse after free in Glic in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.3%CVE-2026-19141HIGHUse after free in Resources in Google Chrome on Android prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer pEPSS 0.3%CVE-2026-9893HIGHUse after free in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2026-9933HIGHUse after free in Input in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gesEPSS 0.3%CVE-2026-19147HIGHUse after free in Aura in Google Chrome on Linux prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process EPSS 0.3%CVE-2026-17723HIGHUse after free in Media in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer procesEPSS 0.3%CVE-2026-15120HIGHUse after free in Core in Google Chrome on Windows prior to 150.0.7871.115 allowed a remote attacker who had compromised the renderer procesEPSS 0.3%CVE-2026-17722HIGHObject lifecycle issue in WebView in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker who had compromised the rendeEPSS 0.3%CVE-2026-19159HIGHUse after free in Views in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who convinced a user to engage in specific UI gesEPSS 0.3%CVE-2026-11002HIGHUse after free in Autofill in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potEPSS 0.3%CVE-2025-65407MEDIUMA use-after-free in the MPEG1or2Demux::newElementaryStream() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a DenEPSS 0.3%CVE-2026-9932HIGHUse after free in ANGLE in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2026-13814HIGHUse 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-2026-9904HIGHUse after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a craEPSS 0.3%