Weaknesses of type CWE-416

5,138 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-2025-21753HIGHbtrfs: fix use-after-free when attempting to join an aborted transactionEPSS 0.3%CVE-2026-100832HIGHUse-after-free in the Graphics: Canvas2D componentEPSS 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-2024-50073HIGHtty: n_gsm: Fix use-after-free in gsm_cleanup_muxEPSS 0.3%CVE-2025-21764HIGHndisc: use RCU protection in ndisc_alloc_skb()EPSS 0.3%CVE-2024-57900HIGHila: serialize calls to nf_register_net_hooks()EPSS 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-2024-27394HIGHtcp: Fix Use-After-Free in tcp_ao_connect_initEPSS 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-2025-6706MEDIUMRunning certain aggregation operations with the SBE engine may lead to unexpected behavior on MongoDB ServerEPSS 0.3%CVE-2025-13638HIGHUse after free in Media Stream in Google Chrome prior to 143.0.7499.41 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.3%CVE-2022-49076HIGHRDMA/hfi1: Fix use-after-free bug for mm structEPSS 0.3%CVE-2024-53165HIGHsh: intc: Fix use-after-free bug in register_intc_controller()EPSS 0.3%CVE-2022-43508HIGHUse-after free vulnerability exists in CX-Programmer v.9.77 and earlier, which may lead to information disclosure and/or arbitrary code execEPSS 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-2024-53166HIGHblock, bfq: fix bfqq uaf in bfq_limit_depth()EPSS 0.3%CVE-2025-6646LOWPDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.3%CVE-2025-2532HIGHLuxion KeyShot USDC File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2024-54458HIGHscsi: ufs: bsg: Set bsg_queue to NULL after removalEPSS 0.3%