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-2023-2680HIGHDma reentrancy issue (incomplete fix for cve-2021-3750)EPSS 0.2%CVE-2024-50121HIGHnfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_netEPSS 0.2%CVE-2021-47668HIGHcan: dev: can_restart: fix use after free bugEPSS 0.2%CVE-2022-1976—A flaw was found in the Linux kernel’s implementation of IO-URING. This flaw allows an attacker with local executable permission to create aEPSS 0.2%CVE-2026-9877HIGHUse after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potenEPSS 0.2%CVE-2026-9925HIGHUse after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potenEPSS 0.2%CVE-2024-35801HIGHx86/fpu: Keep xfd_state in sync with MSR_IA32_XFDEPSS 0.2%CVE-2026-11040HIGHUse 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 0.2%CVE-2024-50067HIGHuprobe: avoid out-of-bounds memory access of fetching argsEPSS 0.2%CVE-2026-11082CRITICALRace in GPU in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.2%CVE-2026-11131CRITICALUse after free in Autofill in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer proEPSS 0.2%CVE-2022-48674HIGHerofs: fix pcluster use-after-free on UP platformsEPSS 0.2%CVE-2026-11114CRITICALUse after free in Device Trust in Google Chrome on Mac prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer proEPSS 0.2%CVE-2024-32610MEDIUMHDF5 Library through 1.14.3 has a SEGV in H5T_close_real in H5T.c, resulting in a corrupted instruction pointer.EPSS 0.2%CVE-2026-11163CRITICALUse after free in Messages in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escEPSS 0.2%CVE-2026-11080HIGHUse after free in WebView in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker to potentially exploit heap corruptioEPSS 0.2%CVE-2026-11165CRITICALUse after free in WebMIDI in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape vEPSS 0.2%CVE-2026-11094CRITICALUse after free in Codecs in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer proceEPSS 0.2%CVE-2026-21351HIGHAfter Effects | Use After Free (CWE-416)EPSS 0.2%CVE-2026-21323HIGHAfter Effects | Use After Free (CWE-416)EPSS 0.2%