Falhas do tipo CWE-416

5.110 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-2026-26330MEDIUMEnvoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directlyEPSS 0.4%CVE-2024-9712HIGHTrimble SketchUp SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-9723HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-26605HIGHIn the Linux kernel 6.0.8, there is a use-after-free in inode_cgwb_move_to_attached in fs/fs-writeback.c, related to __list_del_entry_valid.EPSS 0.4%CVE-2024-9721HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-9713HIGHTrimble SketchUp Pro SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-9714HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-15773CRITICALUse after free in Core in Google Chrome on Windows prior to 150.0.7871.125 allowed a remote attacker to potentially perform a sandbox escapeEPSS 0.4%CVE-2024-20792HIGHAdobe Illustrator TIF File Parsing Use-After-Free Remote memory corruptionEPSS 0.4%CVE-2026-43740MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.EPSS 0.4%CVE-2024-43703HIGHGPU DDK - Duplicate calls to RGXCreateFreeList on the same reservation leads to GPU UAFEPSS 0.4%CVE-2025-21967HIGHksmbd: fix use-after-free in ksmbd_free_work_structEPSS 0.4%CVE-2026-17729HIGHUse after free in V8 in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentialEPSS 0.4%CVE-2023-26226HIGHA use after free memory corruption issue exists in Yandex Browser for Desktop prior to version 24.4.0.682EPSS 0.4%CVE-2025-62170HIGHrAthena map-server use-after-free vulnerability in RODEXEPSS 0.4%CVE-2026-43709MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, maEPSS 0.4%CVE-2026-43717MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2022-1205—A NULL pointer dereference flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with tEPSS 0.4%CVE-2026-10640MEDIUMUse-after-free reading `net_pkt` `iface` after send in IPv6 Neighbor Discovery (`ipv6_nbr.c`)EPSS 0.4%CVE-2026-43727MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%