Falhas do tipo CWE-416

5.138 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-2026-11152CRITICALObject lifecycle issue in Dawn in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape viaEPSS 0.2%CVE-2026-11071HIGHUse after free in Base in Google Chrome on Linux prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process tEPSS 0.2%CVE-2026-11663HIGHUse after free in Skia in Google Chrome prior to 149.0.7827.103 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.2%CVE-2026-21326HIGHAfter Effects | Use After Free (CWE-416)EPSS 0.2%CVE-2026-21221HIGHCapability Access Management Service (camsvc) Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-11188HIGHUse after free in USB in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape vEPSS 0.2%CVE-2026-21329HIGHAfter Effects | Use After Free (CWE-416)EPSS 0.2%CVE-2026-11177HIGHUse after free in Omnibox in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI geEPSS 0.2%CVE-2026-21320HIGHAfter Effects | Use After Free (CWE-416)EPSS 0.2%CVE-2022-49753HIGHdmaengine: Fix double increment of client_count in dma_chan_get()EPSS 0.2%CVE-2024-50051HIGHspi: mpc52xx: Add cancel_work_sync before module removeEPSS 0.2%CVE-2024-11155HIGHRockwell Automation Arena® Use After Free VulnerabilityEPSS 0.2%CVE-2024-50186HIGHnet: explicitly clear the sk pointer, when pf->create failsEPSS 0.2%CVE-2021-47068HIGHnet/nfc: fix use-after-free llcp_sock_bind/connectEPSS 0.2%CVE-2025-21786HIGHworkqueue: Put the pwq after detaching the rescuer from the poolEPSS 0.2%CVE-2026-10639MEDIUMUse-after-free reading `net_pkt_iface()` of a sent ICMPv4 echo-reply packet in `icmpv4_handle_echo_request()`EPSS 0.2%CVE-2026-11633HIGHUse after free in Bluetooth in Google Chrome on Mac prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code via a maliciEPSS 0.2%CVE-2022-49755HIGHusb: gadget: f_fs: Prevent race during ffs_ep0_queue_waitEPSS 0.2%CVE-2024-57984HIGHi3c: dw: Fix use-after-free in dw_i3c_master driver due to race conditionEPSS 0.2%CVE-2024-21918HIGHRockwell Automation Arena Simulation Vulnerable To Memory CorruptionEPSS 0.2%