Some vulnerabilities and a weakness have been reported in the Linux Kernel, which can be exploited by malicious, local users to disclose potentially sensitive information and malicious people to cause a DoS (Denial of Service).
1) A NULL-pointer dereference exists within netfilter when handling new SCTP connections with unknown chunk types. This can be exploited to crash the kernel by sending malicious packets.
Note: This issue is reintroduced in version 2.6.22.
2) An underflow error within the "cpuset_task_read()" function in /kernel/cpuset.c can be exploited to read kernel memory, which may contain potentially sensitive information.
Successful exploitation requires that the attacker has access to open the /dev/cpuset/tasks file (the cpuset file system needs to be mounted).
3) The kernel does not handle seeds for the random number generator correctly. This may weaken the security of applications relying on the randomness of the kernel random number generator.
4) A vulnerability is caused due to an error within the function "tcp_accept_from_sock()" in fs/dlm/lowcomms.c. This can be exploited to halt services using the DLM by opening a connection to the DLM port (default 21064/TCP).
Successful exploitation requires that DLM is used and an attacker can create TCP connections to said port.
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.