Mandrake Linux Security Advisory : kernel (MDKSA-2006:151)
High Nessus Plugin ID 23897
SynopsisThe remote Mandrake Linux host is missing one or more security updates.
DescriptionA number of vulnerabilities were discovered and corrected in the Linux 2.6 kernel :
Prior to and including 2.6.16-rc2, when running on x86_64 systems with preemption enabled, local users can cause a DoS (oops) via multiple ptrace tasks that perform single steps (CVE-2006-1066).
Prior to 2.6.16, a directory traversal vulnerability in CIFS could allow a local user to escape chroot restrictions for an SMB-mounted filesystem via '..\' sequences (CVE-2006-1863).
Prior to 2.6.16, a directory traversal vulnerability in smbfs could allow a local user to escape chroot restrictions for an SMB-mounted filesystem via '..\' sequences (CVE-2006-1864).
Prior to to 126.96.36.199, SCTP conntrack in netfilter allows remote attackers to cause a DoS (crash) via a packet without any chunks, causing a variable to contain an invalid value that is later used to dereference a pointer (CVE-2006-2934).
The dvd_read_bca function in the DVD handling code assigns the wrong value to a length variable, which could allow local users to execute arbitrary code via a crafted USB storage device that triggers a buffer overflow (CVE-2006-2935).
Prior to 2.6.17, the ftdi_sio driver could allow local users to cause a DoS (memory consumption) by writing more data to the serial port than the hardware can handle, causing the data to be queued (CVE-2006-2936).
The 2.6 kernel, when using both NFS and EXT3, allowed remote attackers to cause a DoS (file system panic) via a crafted UDP packet with a V2 lookup procedure that specifies a bad file handle (inode number), triggering an error and causing an exported directory to be remounted read-only (CVE-2006-3468).
The 2.6 kernel's SCTP was found to cause system crashes and allow for the possibility of local privilege escalation due to a bug in the get_user_iov_size() function that doesn't properly handle overflow when calculating the length of iovec (CVE-2006-3745).
The provided packages are patched to fix these vulnerabilities. All users are encouraged to upgrade to these updated kernels immediately and reboot to effect the fixes.
In addition to these security fixes, other fixes have been included such as :
- added support for new devices: o Testo products in usb-serial o ATI SB600 IDE o ULI M-1573 south Bridge o PATA and SATA support for nVidia MCP55, MCP61, MCP65, and AMD CS5536 o Asus W6A motherboard in snd-hda-intel o bcm 5780
- fixed ip_gre module unload OOPS
- enabled opti621 driver for x86 and x86_64
- fixed a local DoS introduced by an imcomplete fix for CVE-2006-2445
- updated to Xen 3.0.1 with selected fixes
- enable hugetlbfs
To update your kernel, please follow the directions located at :
SolutionUpdate the affected packages.