Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
Vulnerability in the MIT-SHM extension of the X server on Linux (XFree86) 4.2.1 and earlier allows local users to read and write arbitrary shared memory, possibly to cause a denial of service or gain privileges.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
XFree86 MIT-SHM共享内存访问漏洞
Vulnerability Description
XFree86 MIT-SHM扩展为X进程提供SYSTEM V共享内存。如为XImages提供共享内存机制，ximage接口的实际图象数据存储在共享内存段，这样就不用通过XLib中间进程通信通道进行图象存储操作，对于处理大型图象，使用这个功能可以提供系统性能。 XFree86 MIT-SHM扩展存在访问控制问题，本地攻击者可以利用这个漏洞读/写任意共享内存，提升权限。 XFree86 MIT-SHM扩展存在问题允许本地X用户读和写系统中任意共享内存段地址，使用精心构建的地址覆盖共享内存段，使的非特权X用户
CVSS Information
N/A
Vulnerability Type
N/A