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-2022-1998—A use after free in the Linux kernel File System notify functionality was found in the way user triggers copy_info_records_to_user() call toEPSS 0.3%CVE-2025-15062HIGHTrimble SketchUp SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-10906HIGHUse after free in WebAuthentication in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specEPSS 0.3%CVE-2026-10931CRITICALUse after free in FileSystem in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape via aEPSS 0.3%CVE-2026-9964HIGHUse after free in Bluetooth in Google Chrome on Mac prior to 148.0.7778.216 allowed an attacker who convinced a user to install a malicious EPSS 0.3%CVE-2024-39495HIGHgreybus: Fix use-after-free bug in gb_interface_release due to race condition.EPSS 0.3%CVE-2026-10988HIGHUse after free in Views in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2023-1249MEDIUMA use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch EPSS 0.3%CVE-2026-11009CRITICALUse after free in USB in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape vEPSS 0.3%CVE-2026-10972CRITICALUse after free in Ozone in Google Chrome on Linux prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape vEPSS 0.3%CVE-2025-3212MEDIUMMali GPU Kernel Driver allows access to already freed memoryEPSS 0.3%CVE-2026-20844HIGHWindows Clipboard Server Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-10891HIGHUse after free in GFX in Google Chrome on Linux prior to 149.0.7827.53 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.3%CVE-2026-14032HIGHUse after free in Bluetooth in Google Chrome on Mac prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious eEPSS 0.3%CVE-2022-47093HIGHGPAC MP4box 2.1-DEV-rev574-g9d5bb184b is vulnerable to heap use-after-free via filters/dmx_m2ts.c:470 in m2tsdmx_declare_pidEPSS 0.3%CVE-2026-11065CRITICALUse after free in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2026-15777HIGHUse after free in UI in Google Chrome on Linux prior to 150.0.7871.125 allowed a remote attacker who convinced a user to engage in specific EPSS 0.3%CVE-2026-80093HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-62788MEDIUMWazuh Vulnerable to Heap Use After Free in w_copy_event_for_logEPSS 0.3%CVE-2025-47991HIGHWindows Input Method Editor (IME) Elevation of Privilege VulnerabilityEPSS 0.3%