Falhas do tipo CWE-416

5.043 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar (ler ou escrever) um bloco de memória que já foi liberado (free, delete). O programa mantém um ponteiro para a memória, mas o sistema operacional pode reatribuir essa região para outro uso, causando corrupção de dados, travamento ou execução de código arbitrário.

Exemplo

Um servidor web aloca memória para armazenar dados de sessão do usuário, depois libera essa memória quando a sessão encerra. Se uma thread continuar tentando acessar essa sessão após a liberação, pode ler dados de outra sessão ou sobrescrever dados críticos de outro processo.

Como mitigar

Sempre anule ponteiros após liberar memória (ptr = NULL), use variáveis de controle para rastrear estado de alocação, implemente gerenciamento automático de memória quando possível (smart pointers em C++), e execute testes com sanitizers (AddressSanitizer, Valgrind) durante desenvolvimento e CI/CD.

CVE-2026-28947HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, iOS 18.7.10 and iPadOS 18.7.10, iOEPSS 0.5%CVE-2026-10947HIGHUse after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2022-3099HIGHUse After Free in vim/vimEPSS 0.5%CVE-2024-26886MEDIUMBluetooth: af_bluetooth: Fix deadlockEPSS 0.5%CVE-2026-10943HIGHUse after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2023-0474HIGHUse after free in GuestView in Google Chrome prior to 109.0.5414.119 allowed an attacker who convinced a user to install a malicious extensiEPSS 0.5%CVE-2026-10903HIGHUse after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2026-10948HIGHUse after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2026-28942MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, macOS TaEPSS 0.5%CVE-2026-28946MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, macOS Tahoe 26.5. Processing malicEPSS 0.5%CVE-2025-60707HIGHMultimedia Class Scheduler Service (MMCSS) Driver Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2026-56848HIGHA flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executEPSS 0.5%CVE-2022-3256HIGHUse After Free in vim/vimEPSS 0.5%CVE-2022-28835HIGHAdobe InCopy Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-23111HIGHnetfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()EPSS 0.5%CVE-2026-57585HIGHMessagePack: Out-of-bounds read/crash on Unpacker reuse after caught errorEPSS 0.5%CVE-2026-26447HIGHStomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over oneEPSS 0.5%CVE-2026-28799HIGHPJSIP: Heap use-after-free in PJSIP presence subscription termination handlerEPSS 0.5%CVE-2024-23134HIGHMultiple Vulnerabilities in the Autodesk AutoCAD Desktop SoftwareEPSS 0.5%CVE-2024-5831HIGHUse after free in Dawn in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to potentially exploit heap corruption via a crafteEPSS 0.5%