Weaknesses of type CWE-416

5,143 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-2026-87657LOWUse after free in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to read memoEPSS 0.2%CVE-2025-21928HIGHHID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove()EPSS 0.2%CVE-2025-61801HIGHDimension | Use After Free (CWE-416)EPSS 0.2%CVE-2026-11073MEDIUMUse after free in WebGL in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive information from pEPSS 0.2%CVE-2026-92627MEDIUMHeap Use-After-Free in H5T__conv_f_fEPSS 0.2%CVE-2025-5644LOWRadare2 radiff2 cons.c r_cons_flush use after freeEPSS 0.2%CVE-2026-12028HIGHUse after free in GPU in Google Chrome on Android prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer processEPSS 0.2%CVE-2024-56675HIGHbpf: Fix UAF via mismatching bpf_prog/attachment RCU flavorsEPSS 0.2%CVE-2024-56602HIGHnet: ieee802154: do not leave a dangling sk pointer in ieee802154_create()EPSS 0.2%CVE-2022-48637HIGHbnxt: prevent skb UAF after handing over to PTP workerEPSS 0.2%CVE-2026-11208MEDIUMUse after free in Codecs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive information from EPSS 0.2%CVE-2026-12023HIGHUse after free in GPU in Google Chrome on Mac prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to EPSS 0.2%CVE-2024-1312MEDIUMKernel: race condition leads to use after free during vma lock in lock_vma_under_rcuEPSS 0.2%CVE-2024-0217LOWPackagekitd: use-after-free in idle function callbackEPSS 0.2%CVE-2025-8837MEDIUMJasPer JPEG2000 File jpc_dec.c jpc_dec_dump use after freeEPSS 0.2%CVE-2023-3863MEDIUMUse-after-free in nfc_llcp_find_loca in net/nfc/llcp_core.cEPSS 0.2%CVE-2026-11307HIGHUse after free in PDFium in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.2%CVE-2024-50130HIGHnetfilter: bpf: must hold reference on net namespaceEPSS 0.2%CVE-2025-12205MEDIUMKamailio Configuration File cfg.lex sr_push_yy_state use after freeEPSS 0.2%CVE-2026-11305HIGHUse after free in PDFium in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.2%