Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
Race condition in the install_user_keyrings function in security/keys/process_keys.c in the Linux kernel before 3.8.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) via crafted keyctl system calls that trigger keyring operations in simultaneous threads.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux Kernel ‘install_user_keyrings()’竞争条件漏洞
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 3.8.3之前版本中的security/keys/process_keys.c中的‘install_user_keyrings’函数中存在竞争条件漏洞。通过特制的keyctl系统调用在同步线程中触发keyring操作，本地攻击者利用该漏洞导致拒绝服务（空指针引用和系统崩溃）。
CVSS Information
N/A
Vulnerability Type
N/A