Mandrake Linux Security Advisory : kernel (MDKSA-2006:018)
Medium Nessus Plugin ID 20796
SynopsisThe remote Mandrake Linux host is missing one or more security updates.
DescriptionA number of vulnerabilities have been corrected in the Linux kernel :
A race condition in the 2.6 kernel could allow a local user to cause a DoS by triggering a core dump in one thread while another thread has a pending SIGSTOP (CVE-2005-3527).
The ptrace functionality in 2.6 kernels prior to 22.214.171.124, using CLONE_THREAD, does not use the thread group ID to check whether it is attaching to itself, which could allow local users to cause a DoS (CVE-2005-3783).
The auto-reap child process in 2.6 kernels prior to 2.6.15 include processes with ptrace attached, which leads to a dangling ptrace reference and allows local users to cause a crash (CVE-2005-3784).
A locking problem in the POSIX timer cleanup handling on exit on kernels 2.6.10 to 2.6.14 when running on SMP systems, allows a local user to cause a deadlock involving process CPU timers (CVE-2005-3805).
The IPv6 flowlabel handling code in 2.4 and 2.6 kernels prior to 2.4.32 and 2.6.14 modifes the wrong variable in certain circumstances, which allows local users to corrupt kernel memory or cause a crash by triggering a free of non-allocated memory (CVE-2005-3806).
An integer overflow in 2.6.14 and earlier could allow a local user to cause a hang via 64-bit mmap calls that are not properly handled on a 32-bit system (CVE-2005-3808).
As well, other bugfixes are included in this update :
Fixes to swsup and HDA sound fixes (DMA buffer fixes, and fixes for the AD1986a codec, added support for Nvidia chipsets, and new model information for the Gigabyte K8N51).
MCP51 forcedeth support has been added.
SolutionUpdate the affected packages.