Multiple vulnerabilities have been reported in the Linux kernel, which potentially can be exploited by malicious, local users to cause a DoS (Denial of Service), disclose sensitive information, or gain escalated privileges on a vulnerable system.
1) A signedness error in the "poolsize_strategy()" function of the random poolsize sysctl handler (drivers/char/random.c) can potentially be exploited to cause a buffer overflow when copying data from user space into kernel space.
Successful exploitation may crash the system or allow execution of arbitrary code with escalated privileges. However, exploitation requires UID 0, but not root capabilities.
The vulnerability is reported in the 2.4 and 2.6 kernel branches.
2) Boundary errors in various functions of the MOXA serial driver (drivers/char/moxa.c) can be exploited to cause buffer overflows when copying data from user space into a kernel space buffer.
Successful exploitation may allow execution of arbitrary code with escalated privileges.
The vulnerabilities are reported in the 2.2, 2.4, and 2.6 kernel branches.
3) An unprivileged process can reportedly bypass the RLIMIT_MEMLOCK soft resource limit and lock more memory than permitted via the "mlockall()" system call.
The vulnerability is reported in versions 2.6.9 and 2.6.10.
Solution: Vulnerability #2 is fixed in version 220.127.116.11 and 2.6.22.
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
information to firstname.lastname@example.org
Subject: Linux Kernel Multiple Vulnerabilities
No posts yet
You must be logged in to post a comment.
Secunia Customer Login
Not a customer already?
Learn more about how our market leading Vulnerability Management solutions can help you manage risk and ensure compliance.