Fallos del tipo CWE-416

5043 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-2023-5856HIGHUse after free in Side Panel in Google Chrome prior to 119.0.6045.105 allowed a remote attacker who convinced a user to engage in specific UEPSS 1.2%CVE-2021-36980MEDIUMOpen vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_dEPSS 1.2%CVE-2022-24791HIGHUse after free in WasmtimeEPSS 1.2%CVE-2024-31578HIGHFFmpeg version n6.1.1 was discovered to contain a heap use-after-free via the av_hwframe_ctx_init function.EPSS 1.2%CVE-2024-56171HIGHlibxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlscEPSS 1.2%CVE-2024-35955HIGHkprobes: Fix possible use-after-free issue on kprobe registrationEPSS 1.2%CVE-2024-49069HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 1.2%CVE-2021-32613—In radare2 through 5.3.0 there is a double free vulnerability in the pyc parse via a crafted file which can lead to DoS.EPSS 1.2%CVE-2024-49128HIGHWindows Remote Desktop Services Remote Code Execution VulnerabilityEPSS 1.2%CVE-2011-1236HIGHUse-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows EPSS 1.2%CVE-2026-63639HIGHValkey: UAF in stream deserialization may lead to remote code executionEPSS 1.2%CVE-2022-1114—A heap-use-after-free flaw was found in ImageMagick's RelinquishDCMInfo() function of dcm.c file. This vulnerability is triggered when an atEPSS 1.2%CVE-2022-1011—A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the way a user triggers write(). This flaw allows a local user to gEPSS 1.2%CVE-2021-47378CRITICALnvme-rdma: destroy cm id before destroy qp to avoid use after freeEPSS 1.2%CVE-2024-43574HIGHMicrosoft Speech Application Programming Interface (SAPI) Remote Code Execution VulnerabilityEPSS 1.2%CVE-2021-41539—A vulnerability has been identified in Solid Edge SE2021 (All versions < SE2021MP8). The affected application contains a use-after-free vulnEPSS 1.2%CVE-2011-1874HIGHUse-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows EPSS 1.2%CVE-2021-47324HIGHwatchdog: Fix possible use-after-free in wdt_startup()EPSS 1.2%CVE-2021-47323HIGHwatchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff()EPSS 1.2%CVE-2021-41536—A vulnerability has been identified in Solid Edge SE2021 (All versions < SE2021MP8). The affected application contains a use-after-free vulnEPSS 1.2%