kernel security work2014年Linux内核安全工作报告（2014linux）

Linux is one of the most widely used operating systems today, and its security is of utmost importance. The Linux kernel is perhaps the most critical component to maintaining a secure environment, and it is constantly being improved upon. This report will provide insight into some of the security related work that has been undertaken in the Linux kernel in 2014.

To begin, much of the work has focused on improving the security of the system through better structured code. One example of this is the implementation of the memory protection feature, which involves limiting the ability of a malicious process to read or write a certain area of memory. Additionally, the Linux kernel code base has undergone a large restructuring, to make it easier to find code that is more likely to contain security flaws.

Another major security effort for the Linux kernel in 2014 was cleaning up the kernel source code in order to reduce the amount of unnecessary complexity. This included the removal of old, deprecated code and the adoption of a much more stringent coding style. As a result, the kernel is now much smaller and more manageable, resulting in fewer potential security vulnerabilities.

The Linux kernel was also improved to better protect against malicious activities such as buffer overflows and heap overflows. For example, the “ProPolice” feature was introduced, which involves placing canaries in the stack to detect overflows, and performing controlled stack pointer manipulations to prevent malicious activities. In addition, the kernel was hardened to further protect the system from malicious activities, including the implementation of address space layout randomization (ASLR).

Finally, the Linux kernel has also had various patches for fixing various security vulnerabilities released in 2014. These included updates to address various CVE’s (Common Vulnerabilities and Exposures) reported to the Linux kernel, to ensure that all users remain protected from possible exploits.

Ultimately, the amount of security related work completed in the Linux kernel in 2014 has been significant. The source code has been restructured, various security related features have been added, and numerous patches for security vulnerabilities have been released. All of this work ensures that the vast Linux userbase remains secure, and we can look forward to even more security improvements in the future.