CVE-2026-49416
Integer overflow in vt(4) CONS_HISTORY ioctl
Vexday Risk Score
3Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS —EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Ciclo de vida
27 jun 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation.
An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges.
Produtos afetados
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