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-2026-13027HIGHUse after free in FileSystem in Google Chrome prior to 149.0.7827.197 allowed a remote attacker to potentially exploit heap corruption via aEPSS 0.3%CVE-2026-47310HIGHUse after free vulnerability in Samsung Open Source Escargot allows Pointer Manipulation. This issue affects Escargot: 590345cc6258317c5da8EPSS 0.3%CVE-2026-13028CRITICALUse after free in WebGL in Google Chrome on Android prior to 149.0.7827.197 allowed a remote attacker to potentially perform a sandbox escapEPSS 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-2026-13784CRITICALUse 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-2026-13775CRITICALUse 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-2026-10013HIGHUse 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-2026-28994MEDIUMA use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadEPSS 0.3%CVE-2024-50124HIGHBluetooth: ISO: Fix UAF on iso_sock_timeoutEPSS 0.3%CVE-2026-32161HIGHWindows Native WiFi Miniport Driver Remote Code Execution VulnerabilityEPSS 0.3%CVE-2023-3019MEDIUMQemu: e1000e: heap use-after-free in e1000e_write_packet_to_guest()EPSS 0.3%CVE-2026-14103MEDIUMUse after free in SSL in Google Chrome on ChromeOS prior to 150.0.7871.47 allowed a remote attacker to obtain potentially sensitive informatEPSS 0.3%CVE-2021-38023HIGHUse after free in Extensions in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially exploit heap corruption via a EPSS 0.3%CVE-2023-6111HIGHUse-after-free in Linux kernel's netfilter: nf_tables componentEPSS 0.3%CVE-2022-2961—A use-after-free flaw was found in the Linux kernel’s PLP Rose functionality in the way a user triggers a race condition by calling bind whiEPSS 0.3%CVE-2023-36833MEDIUMJunos OS Evolved: PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202: The aftman-bt process will crash in a MoFRR scenario after multiple link flapsEPSS 0.3%CVE-2024-53237HIGHBluetooth: fix use-after-free in device_for_each_child()EPSS 0.3%CVE-2025-55688HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-4207HIGHUse-after-free in Linux kernel's net/sched: cls_fw componentEPSS 0.3%CVE-2025-55691HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%