Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux Kernel ‘journal_unmap_buffer()’ 函数本地拒绝服务漏洞
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 3.3.1之前版本中的fs/jbd2/transaction.c中的journal_unmap_buffer函数中存在漏洞，该漏洞源于未正确处理_Delay和_Unwritten缓冲区头部状态。本地攻击者可通过该漏洞利用安装日志ext4的系统文件的存在，导致拒绝服务（系统崩溃）。
CVSS Information
N/A
Vulnerability Type
N/A