Advisories (MDKSA-2006:059 ): kernel

aru · March 23, 2006

Mandriva Advisories MDKSA-2006:059 : kernel

Updated kernel packages fix multiple vulnerabilities

March 22nd, 2006

A number of vulnerabilities were discovered and corrected in the Linux 2.6 kernel: sysctl.c in the Linux kernel prior to 2.6.14.1 allows local users to cause a Denial of Service (kernel oops) and possibly execute code by opening an interface file in /proc/sys/net/ipv4/conf/, waiting until the interface is unregistered, then obtaining and modifying function pointers in memory that was used for the ctl_table (CVE-2005-2709). Multiple vulnerabilities in versions prior to 2.6.13.2 allow local users to cause a DoS (oops from null dereference) via fput in a 32bit ioctl on 64-bit x86 systems or sockfd_put in the 32-bit routing_ioctl function on 64-bit systems (CVE-2005-3044).Note that this was previously partially corrected in MDKSA-2005:235. Prior to 2.6.14, the kernel's atm module allows local users to cause a DoS (panic) via certain socket calls that produce inconsistent reference counts for loadable protocol modules (CVE-2005-3359). A race condition in the (1) add_key, (2) request_key, and (3) keyctl functions in the 2.6.x kernel allows local users to cause a DoS (crash) or read sensitive kernel memory by modifying the length of a string argument between the time that the kernel calculates the length and when it copies the data into kernel memory (CVE-2006-0457). Prior to 2.6.15.5, the kernel allows local users to obtain sensitive information via a crafted XFS ftruncate call, which may return stale data (CVE-2006-0554). Prior to 2.6.15.5, the kernel allows local users to cause a DoS (NFS client panic) via unknown attack vectors related to the use of O_DIRECT (CVE-2006-0555). Prior to an including kernel 2.6.16, sys_mbind in mempolicy.c does not sanity check the maxnod variable before making certain computations, which has an unknown impact and attack vectors (CVE-2006-0557). Prior to 2.6.15.5, the kernel allows local users to cause a DoS ("endless recursive fault") via unknown attack vectors related to a "bad elf entry address" on Intel processors (CVE-2006-0741). Prior to 2.6.15.6, the die_if_kernel function in the kernel can allow local users to cause a DoS by causing user faults on Itanium systems (CVE-2006-00742). A race in the signal-handling code which allows a process to become unkillable when the race is triggered was also fixed. In addition to these security fixes, other fixes have been included such as: - add ich8 support - libata locking rewrite - libata clear ATA_QCFLAG_ACTIVE flag before calling the completion callback - support the Acer Aspire 5xxx/3xxx series in the acerhk module - USB storage: remove info sysfs file as it violates the sysfs one value per file rule - fix OOPS in sysfs_hash_and_remove_file() - pl2303 USB driver fixes; makes pl2303HX chip work correctly - fix OOPS in IPMI driver which is probably caused when trying to use ACPI functions when ACPI was not properly initialized - fix de_thread() racy BUG_ON() The provided packages are patched to fix these vulnerabilities.All users are encouraged to upgrade to these updated kernels. To update your kernel, please follow the directions located at: http://www.mandriva.com/en/security/kernelupdate Please note that users using the LSI Logic 53c1030 dual-channel ultra 320 SCSI card will need to re-create their initrd images manually prior to rebooting in order to fix a bug that prevents booting.A future update will correct this problem.To do this, execute: # rm /boot/initrd-2.6.12-18mdk.img # mkinitrd /boot/initrd-2.6.12-18mdk.img 2.6.12-18mdk --with-module=mptspi

The released versions of Mandriva GNU/Linux affected are: