Fallos del tipo CWE-416

5134 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2026-43499HIGHrtmutex: Use waiter::task instead of current in remove_waiter()EPSS 0.3%CVE-2023-52983HIGHblock, bfq: fix uaf for bfqq in bic_set_bfqq()EPSS 0.3%CVE-2025-10527HIGHSandbox escape due to use-after-free in the Graphics: Canvas2D componentEPSS 0.3%CVE-2022-49179HIGHblock, bfq: don't move oom_bfqqEPSS 0.3%CVE-2023-4755MEDIUMUse After Free in gpac/gpacEPSS 0.3%CVE-2022-49176HIGHbfq: fix use-after-free in bfq_dispatch_requestEPSS 0.3%CVE-2026-3919HIGHUse after free in Extensions in Google Chrome prior to 146.0.7680.71 allowed an attacker who convinced a user to install a malicious extensiEPSS 0.3%CVE-2026-21237HIGHWindows Subsystem for Linux Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69890HIGHWindows Virtual Trusted Platform Module Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2022-49626HIGHsfc: fix use after free when disabling sriovEPSS 0.3%CVE-2024-50217HIGHbtrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()EPSS 0.3%CVE-2022-32903HIGHA use after free issue was addressed with improved memory management. This issue is fixed in tvOS 16, iOS 16, watchOS 9. An app may be able EPSS 0.3%CVE-2022-49685HIGHiio: trigger: sysfs: fix use-after-free on removeEPSS 0.3%CVE-2022-49236HIGHbpf: Fix UAF due to race between btf_try_get_module and load_moduleEPSS 0.3%CVE-2026-15774HIGHUse after free in Skia in Google Chrome prior to 150.0.7871.125 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2022-41858HIGHA flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in progress to detach in sl_tx_timeout in EPSS 0.3%CVE-2022-49287HIGHtpm: fix reference counting for struct tpm_chipEPSS 0.3%CVE-2026-11641HIGHUse after free in Bluetooth in Google Chrome on Windows prior to 149.0.7827.103 allowed a remote attacker who convinced a user to engage in EPSS 0.3%CVE-2026-102308CRITICALUse after free in Views in Google Chrome prior to 154.0.8037.92 allowed a remote attacker leveraging social engineering to execute arbitraryEPSS 0.3%CVE-2026-102309CRITICALUse after free in FullScreen in Google Chrome prior to 154.0.8037.92 allowed a remote attacker to execute arbitrary code outside the sandboxEPSS 0.3%