Weaknesses of type CWE-416

5,184 results

Uso após liberação de memória

Ocorre quando o código tenta acessar um bloco de memória que já foi desalocado (free/delete). O ponteiro continua apontando para aquele endereço, mas o dado ali pode ter sido sobrescrito por outra operação, causando comportamento impredizível, corrupção de dados ou execução de código arbitrário.

Example

Um buffer é alocado, depois liberado com free(). Mais adiante, o código ainda tenta ler ou escrever naquele mesmo ponteiro sem verificar. Se um atacante controlar a alocação subsequente daquele endereço, consegue manipular o conteúdo que será lido.

How to mitigate

Anule o ponteiro imediatamente após liberar (ptr = NULL), implemente análise estática para detectar acessos pós-liberação, use ferramentas como valgrind ou AddressSanitizer nos testes, e considere linguagens com gerenciamento automático de memória para código sensível.

CVE-2026-11115HIGHUse after free in Updater in Google Chrome on Windows prior to 149.0.7827.53 allowed a local attacker to perform OS-level privilege escalatiEPSS 0.1%CVE-2024-29787HIGHIn lwis_process_transactions_in_queue of lwis_transaction.c, there is a possible use after free due to a use after free. This could lead to EPSS 0.1%CVE-2025-47333MEDIUMUse After Free in HLOSEPSS 0.1%CVE-2026-21380HIGHUse After Free in DSP ServiceEPSS 0.1%CVE-2026-24082HIGHUse After Free in Automotive GPUEPSS 0.1%CVE-2024-23716HIGHIn DevmemIntPFNotify of devicemem_server.c, there is a possible use-after-free due to a race condition. This could lead to local escalation EPSS 0.1%CVE-2018-9344HIGHIn several functions of DescramblerImpl.cpp, there is a possible use after free due to improper locking. This could lead to local escalationEPSS 0.1%CVE-2024-47033HIGHIn lwis_allocator_free of lwis_allocator.c, there is a possible memory corruption due to a use after free. This could lead to local escalatiEPSS 0.1%CVE-2026-0143HIGHIn lwis_device_external_event_emit of lwis_event.c, there is a possible memory corruption due to a use after free. This could lead to local EPSS 0.1%CVE-2025-47379HIGHUse After Free in Automotive AudioEPSS 0.1%CVE-2026-0137HIGHIn edgetpu_sync_fence_group_shutdown() of edgetpu-dmabuf.c, there is a possible elevation of privilege due to a use after free. This could lEPSS 0.1%CVE-2025-47376HIGHUse After Free in Automotive AudioEPSS 0.1%CVE-2026-20442MEDIUMIn display, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has alreEPSS 0.1%CVE-2026-20439MEDIUMIn imgsys, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has alreaEPSS 0.1%CVE-2025-47377HIGHUse After Free in Automotive AudioEPSS 0.1%CVE-2025-47381HIGHUse After Free in Automotive AudioEPSS 0.1%CVE-2025-47375HIGHUse After Free in Automotive AudioEPSS 0.1%CVE-2025-47386HIGHUse After Free in Automotive AudioEPSS 0.1%CVE-2026-20437MEDIUMIn MAE, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has already EPSS 0.1%CVE-2026-56964MEDIUMIn multiple locations, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with SysEPSS 0.1%