Falhas do tipo CWE-401

664 resultados

Fuga de memória - liberação não realizada após uso

Ocorre quando o código aloca memória (heap ou recursos) mas falha em liberá-la quando não é mais necessária. A memória fica presa no processo, reduzindo gradualmente a memória disponível até causar degradação de performance ou crash. É especialmente crítico em serviços que rodam indefinidamente (daemons, APIs, servidores).

Exemplo

Um servidor web que processa requisições sem liberar buffers de conexão fechada. Após milhares de requisições, acumula KB/MB de lixo na memória. Ou uma função que abre arquivo/socket e retorna sem chamar close() em todos os caminhos possíveis (incluindo exceções).

Como mitigar

Use padrões como RAII (Resource Acquisition Is Initialization) em C++, try-finally ou context managers em Python/Java, ou verificadores de vazamento (valgrind, AddressSanitizer). Revise especialmente blocos de exceção e retornos prematuros. Testes de longa duração ajudam a detectar fugas acumulativas.

CVE-2021-3744—A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackeEPSS 0.5%CVE-2024-56779CRITICALnfsd: fix nfs4_openowner leak when concurrent nfsd4_open occurEPSS 0.5%CVE-2025-1816MEDIUMFFmpeg IAMF File iamf_parse.c audio_element_obu memory leakEPSS 0.5%CVE-2026-18212HIGHKeycloak-services: keycloak-services: saml redirect deflate helpers leak native zlib stateEPSS 0.5%CVE-2026-30873LOWOpenWrt Project jsonpath: Memory leak when processing strings, labels, and regexp tokensEPSS 0.5%CVE-2024-4435MEDIUMBTreeMap memory leak when deallocating nodes with overflowsEPSS 0.5%CVE-2023-4513MEDIUMMissing Release of Memory after Effective Lifetime in WiresharkEPSS 0.5%CVE-2026-69781MEDIUMWindows DHCP Client Denial of Service VulnerabilityEPSS 0.5%CVE-2025-21788HIGHnet: ethernet: ti: am65-cpsw: fix memleak in certain XDP casesEPSS 0.5%CVE-2021-47519HIGHcan: m_can: m_can_read_fifo: fix memory leak in error branchEPSS 0.5%CVE-2026-10699HIGHMemory leak in SFTP service can result in a denial of service in MOVEit TransferEPSS 0.5%CVE-2025-29910MEDIUMCryptoLib's crypto_handle_incrementing_nontransmitted_counter Function has Memory LeakEPSS 0.5%CVE-2026-47482HIGHNVIDIA Triton Inference Server for Linux contains a vulnerability where an attacker can cause missing release of memory after effective lifeEPSS 0.5%CVE-2026-22024MEDIUMCryptoLib Memory Leak in KMC Encrypt Function Leads to Resource ExhaustionEPSS 0.5%CVE-2024-7095MEDIUMOn affected platforms running Arista EOS with SNMP configured, if “snmp-server transmit max-size” is configured, under some circumstances a specially crafted packet can cause the snmpd process to leak memory. This may result in the snmpd process being termEPSS 0.5%CVE-2026-81563HIGHSVCB AliasMode additional-data error leaks qpcache referencesEPSS 0.5%CVE-2024-6875MEDIUMInfinispan: infinispan: rest compare api has buffer leakEPSS 0.5%CVE-2026-32874HIGHUltraJSON has a Memory Leak parsing large integers allows DoSEPSS 0.5%CVE-2021-3574—A vulnerability was found in ImageMagick-7.0.11-5, where executing a crafted file with the convert command, ASAN detects memory leaks.EPSS 0.5%CVE-2023-31975LOWyasm v1.3.0 was discovered to contain a memory leak via the function yasm_intnum_copy at /libyasm/intnum.c. Note: Multiple third parties disEPSS 0.5%