Falhas do tipo CWE-416

5.134 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-2025-21763HIGHneighbour: use RCU protection in __neigh_notify()EPSS 0.3%CVE-2025-21753HIGHbtrfs: fix use-after-free when attempting to join an aborted transactionEPSS 0.3%CVE-2023-40490HIGHMaxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2023-53003HIGHEDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_infoEPSS 0.3%CVE-2026-11646HIGHUse after free in ViewTransitions in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandEPSS 0.3%CVE-2026-11637HIGHUse after free in Views in Google Chrome on Mac prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code via a crafted HTEPSS 0.3%CVE-2025-21764HIGHndisc: use RCU protection in ndisc_alloc_skb()EPSS 0.3%CVE-2025-11219LOWUse after free in V8 in Google Chrome prior to 141.0.7390.54 allowed a remote attacker to potentially perform out of bounds memory access viEPSS 0.3%CVE-2026-10005HIGHUse after free in WebAppInstalls in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage inEPSS 0.3%CVE-2025-59196HIGHWindows Simple Search and Discovery Protocol (SSDP) Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2024-57979HIGHpps: Fix a use-after-freeEPSS 0.3%CVE-2024-57900HIGHila: serialize calls to nf_register_net_hooks()EPSS 0.3%CVE-2024-50073HIGHtty: n_gsm: Fix use-after-free in gsm_cleanup_muxEPSS 0.3%CVE-2026-100832HIGHUse-after-free in the Graphics: Canvas2D componentEPSS 0.3%CVE-2024-27394HIGHtcp: Fix Use-After-Free in tcp_ao_connect_initEPSS 0.3%CVE-2025-6706MEDIUMRunning certain aggregation operations with the SBE engine may lead to unexpected behavior on MongoDB ServerEPSS 0.3%CVE-2025-6646LOWPDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.3%CVE-2026-47586MEDIUMNVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel module where an attacker could cause a use-after-freeEPSS 0.3%CVE-2026-11144HIGHUse after free in Media in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a cEPSS 0.3%CVE-2024-54458HIGHscsi: ufs: bsg: Set bsg_queue to NULL after removalEPSS 0.3%