Rapid7 Vulnerability & Exploit Database

CESA-2006:0710: kernel security update

Free InsightVM Trial No credit card necessary
Watch Demo See how it all works
Back to Search

CESA-2006:0710: kernel security update



Updated kernel packages that fix several security issues in the CentOS Enterprise Linux 3 kernel are now available. This security advisory has been rated as having important security impact by the CentOS Security Response Team.

The Linux kernel handles the basic functions of the operating system. These new kernel packages contain fixes for the security issues described below: * a flaw in the IPC shared-memory implementation that allowed a local user to cause a denial of service (deadlock) that resulted in freezing the system (CVE-2006-4342, Important) * an information leak in the copy_from_user() implementation on s390 and s390x platforms that allowed a local user to read arbitrary kernel memory (CVE-2006-5174, Important) * a flaw in the ATM subsystem affecting systems with installed ATM hardware and configured ATM support that allowed a remote user to cause a denial of service (panic) by accessing socket buffer memory after it has been freed (CVE-2006-4997, Moderate) * a directory traversal vulnerability in smbfs that allowed a local user to escape chroot restrictions for an SMB-mounted filesystem via "..\\" sequences (CVE-2006-1864, Moderate) * a flaw in the mprotect system call that allowed enabling write permission for a read-only attachment of shared memory (CVE-2006-2071, Moderate) * a flaw in the DVD handling of the CDROM driver that could be used together with a custom built USB device to gain root privileges (CVE-2006-2935, Moderate) In addition to the security issues described above, a bug fix for a clock skew problem (which could lead to unintended keyboard repeat under X11) was also included. The problem only occurred when running the 32-bit x86 kernel on 64-bit dual-core x86_64 hardware. Note: The kernel-unsupported package contains various drivers and modules that are unsupported and therefore might contain security problems that have not been addressed. All CentOS Linux 3 users are advised to upgrade their kernels to the packages associated with their machine architecture and configurations as listed in this erratum.


  • centos-upgrade-kernel
  • centos-upgrade-kernel-boot
  • centos-upgrade-kernel-doc
  • centos-upgrade-kernel-hugemem
  • centos-upgrade-kernel-hugemem-unsupported
  • centos-upgrade-kernel-smp
  • centos-upgrade-kernel-smp-unsupported
  • centos-upgrade-kernel-source
  • centos-upgrade-kernel-unsupported

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center