Rapid7 Vulnerability & Exploit Database

CESA-2005:551: kernel security update

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

CESA-2005:551: kernel security update



Updated kernel packages are now available to correct security issues and bugs for CentOS Linux version 2.1 (Itanium). This update 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. This is a kernel maintenance update to CentOS Linux 2.1. The following security issues are corrected: A flaw between execve() syscall handling and core dumping of ELF-format executables allowed local unprivileged users to cause a denial of service (system crash) or possibly gain privileges. The Common Vulnerabilities and Exposures project has assigned the name CAN-2005-1263 to this issue. A flaw in ptrace for Itanium architectures was discovered. A local user could use this flaw to cause a denial of service (crash) or possibly gain privileges. (CAN-2005-1761) A race condition in the ia32 compatibility code for the execve system call was discovered. A local user could use this flaw to cause a denial of service (kernel panic) or possibly gain privileges. (CAN-2005-1768) A flaw when freeing a pointer in load_elf_library was discovered. A local user could potentially use this flaw to cause a denial of service (crash). (CAN-2005-0749) The Direct Rendering Manager (DRM) driver did not properly check the DMA lock, which could allow remote attackers or local users to cause a denial of service (X Server crash) or possibly modify the video output. (CAN-2004-1056) A flaw in the moxa serial driver could allow a local user to perform privileged operations such as replacing the firmware. (CAN-2005-0504) The following bug fixes were also made: - "busy inodes after unmount" error on NFS volumes - Establish 64-bit limits even for 32-bit threads - Fix a race condition in __get_lease - Fix error in IDE disk accounting. This last fix causes IO accounting to occur only on READ and WRITE operations. This fixes several bugs in various accounting and statistic utilities. - Fix kswapd/dquot deadlock bug - Fix loop control bug in do_shmem_file_read All CentOS Linux 2.1 Itanium users are advised to upgrade their kernels to the packages associated with their machine configurations as listed in this erratum.


  • centos-upgrade-kernel
  • centos-upgrade-kernel-doc
  • centos-upgrade-kernel-smp
  • centos-upgrade-kernel-source

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