Falhas do tipo CWE-416

5.126 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-2026-91737HIGHUse after free in PDF in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a cEPSS 0.3%CVE-2025-48752LOWIn the process-sync crate 0.2.2 for Rust, the drop function lacks a check for whether the pthread_mutex is unlocked.EPSS 0.3%CVE-2026-13831HIGHOut of bounds read and write in GPU in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2024-6777HIGHUse after free in Navigation in Google Chrome prior to 126.0.6478.182 allowed an attacker who convinced a user to install a malicious extensEPSS 0.3%CVE-2026-13855HIGHUse after free in Ozone in Google Chrome on Linux prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specifiEPSS 0.3%CVE-2024-1847HIGHMultiple vulnerabilities exist in file reading procedure in eDrawings from Release SOLIDWORKS 2023 through Release SOLIDWORKS 2024EPSS 0.3%CVE-2025-12380CRITICALUse-after-free in WebGPU internals triggered from a compromised child processEPSS 0.3%CVE-2026-13283HIGHUse after free in AdFilter in Google Chrome on Android prior to 149.0.7827.201 allowed a remote attacker who convinced a user to engage in sEPSS 0.3%CVE-2026-24292HIGHWindows Connected Devices Platform Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-7898HIGHUse after free in Chromoting in Google Chrome on Linux prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code via maliciEPSS 0.3%CVE-2018-7521—In Omron CX-Supervisor Versions 3.30 and prior, use after free vulnerabilities can be exploited when CX Supervisor parses a specially crafteEPSS 0.3%CVE-2023-20938HIGHIn binder_transaction_buffer_release of binder.c, there is a possible use after free due to improper input validation. This could lead to loEPSS 0.3%CVE-2025-55690HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-11651CRITICALUse after free in Network in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via EPSS 0.3%CVE-2026-5287HIGHUse after free in PDF in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code inside a sandbox via a crEPSS 0.3%CVE-2024-50125HIGHBluetooth: SCO: Fix UAF on sco_sock_timeoutEPSS 0.3%CVE-2026-91724HIGHUse after free in Input in Google Chrome prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2022-1516—A NULL pointer dereference flaw was found in the Linux kernel’s X.25 set of standardized network protocols functionality in the way a user tEPSS 0.3%CVE-2026-5460MEDIUMHeap Use-After-Free in PQC Hybrid KeyShare Error Cleanup in wolfSSL TLS 1.3EPSS 0.3%CVE-2020-10720—A flaw was found in the Linux kernel's implementation of GRO in versions before 5.2. This flaw allows an attacker with local access to crashEPSS 0.3%