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-2026-10703MEDIUMEIPStackGroup OpENer SendRRData cipmessagerouter.c CreateMessageRouterRequestStructure use after freeEPSS 0.2%CVE-2026-11680HIGHUse after free in Media in Google Chrome on Windows prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sanEPSS 0.2%CVE-2025-6275MEDIUMWebAssembly wabt binary-reader-interp.cc GetFuncOffset use after freeEPSS 0.2%CVE-2024-56558HIGHnfsd: make sure exp active before svc_export_showEPSS 0.2%CVE-2024-56606HIGHaf_packet: avoid erroring out after sock_init_data() in packet_create()EPSS 0.2%CVE-2026-11674HIGHUse after free in Guest View in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox vEPSS 0.2%CVE-2025-55644MEDIUMA heap use-after-free in the gf_node_get_tag function (scenegraph/base_scenegraph.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial EPSS 0.2%CVE-2024-56642HIGHtipc: Fix use-after-free of kernel socket in cleanup_bearer().EPSS 0.2%CVE-2026-11671CRITICALUse after free in Navigation in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to potentially perform a sandbox escape via EPSS 0.2%CVE-2024-25385MEDIUMAn issue in flvmeta v.1.2.2 allows a local attacker to cause a denial of service via the flvmeta/src/flv.c:375:21 function in flv_close.EPSS 0.2%CVE-2026-11230HIGHUse after free in Extensions in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox viEPSS 0.2%CVE-2022-1048—A use-after-free flaw was found in the Linux kernel’s sound subsystem in the way a user triggers concurrent calls of PCM hw_params. The hw_fEPSS 0.2%CVE-2026-34772MEDIUMElectron: Use-after-free in download save dialog callbackEPSS 0.2%CVE-2025-9385MEDIUMappneta tcpreplay tcprewrite edit_packet.c fix_ipv6_checksums use after freeEPSS 0.2%CVE-2023-2513MEDIUMA use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attriEPSS 0.2%CVE-2025-21715HIGHnet: davicom: fix UAF in dm9000_drv_removeEPSS 0.2%CVE-2026-11652HIGHUse after free in Extensions in Google Chrome prior to 149.0.7827.103 allowed a remote attacker who had compromised the renderer process to EPSS 0.2%CVE-2026-11661HIGHUse after free in Views in Google Chrome on Windows prior to 149.0.7827.103 allowed a remote attacker who had compromised the renderer proceEPSS 0.2%CVE-2023-4387HIGHKernel: vmxnet3: use-after-free in vmxnet3_rq_alloc_rx_buf()EPSS 0.2%CVE-2024-26957HIGHs390/zcrypt: fix reference counting on zcrypt card objectsEPSS 0.2%