CVE-2011-4080 in Linux Kernel
Summary
The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.
Reservation
10/18/2011
Disclosure
05/24/2012
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 60836 | Linux Kernel sysrq_sysctl_handler access control | 264 | Not defined | Official fix | CVE-2011-4080 |