Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.
CVSS Information
N/A
Vulnerability Type
整数溢出或超界折返
Vulnerability Title
Canonical Ubuntu Linux 输入验证错误漏洞
Vulnerability Description
Canonical Ubuntu Linux是英国科能软件（Canonical）公司的一套Linux操作系统。 Canonical Ubuntu Linux 存在安全漏洞，该漏洞源于错误地处理了某些对象的引用计数，从而导致拒绝服务。攻击者利用该漏洞可以执行任意代码。
CVSS Information
N/A
Vulnerability Type
N/A