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-2026-69890HIGHWindows Virtual Trusted Platform Module Elevation of Privilege VulnerabilityEPSS 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-2024-50217HIGHbtrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()EPSS 0.3%CVE-2023-1670HIGHA flaw use after free in the Linux kernel Xircom 16-bit PCMCIA (PC-card) Ethernet driver was found.A local user could use this flaw to crashEPSS 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-2023-4679MEDIUMUse After Free in gpac/gpacEPSS 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-2026-10915HIGHUse after free in Core in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to EPSS 0.3%CVE-2024-26333MEDIUMswftools v0.9.2 was discovered to contain a segmentation violation via the function free_lines at swftools/lib/modules/swfshape.c.EPSS 0.3%CVE-2026-15772HIGHUse after free in GPU in Google Chrome on Android prior to 150.0.7871.125 allowed a remote attacker who had compromised the renderer processEPSS 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-2022-49182HIGHnet: hns3: add vlan list lock to protect vlan listEPSS 0.3%CVE-2022-49287HIGHtpm: fix reference counting for struct tpm_chipEPSS 0.3%CVE-2022-49196HIGHpowerpc/pseries: Fix use after free in remove_phb_dynamic()EPSS 0.3%CVE-2022-49711HIGHbus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()EPSS 0.3%CVE-2026-11639HIGHUse after free in Compositing in Google Chrome on Mac prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code via a crafEPSS 0.3%CVE-2022-49236HIGHbpf: Fix UAF due to race between btf_try_get_module and load_moduleEPSS 0.3%CVE-2023-45898HIGHThe Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent.EPSS 0.3%CVE-2026-10634MEDIUMUse-after-free in Zephyr native TCP `net_tcp_foreach()` due to dropping `tcp_lock` during the callbackEPSS 0.3%