漏洞信息
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Vulnerability Title
Integer overflow in vt(4) CONS_HISTORY ioctl
Vulnerability Description
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.
CVSS Information
N/A
Vulnerability Type
整数溢出或超界折返
Vulnerability Title
FreeBSD 数字错误漏洞
Vulnerability Description
FreeBSD是FreeBSD基金会开源的一套类Unix操作系统。 FreeBSD存在数字错误漏洞,该漏洞源于CONS_HISTORY ioctl处理程序未充分验证请求的历史记录大小,导致整数溢出,从而分配比预期更小的堆缓冲区,后续初始化写入超出分配边界。
CVSS Information
N/A
Vulnerability Type
N/A