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Ubuntu alert USN-1227-1 (kernel)
========================================================================== Ubuntu Security Notice USN-1227-1 October 11, 2011 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 10.10 Summary: Multiple kernel flaws have been fixed. Software Description: - linux: Linux kernel Details: Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1576) Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. (CVE-2011-1776) Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. (CVE-2011-1833) Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service. (CVE-2011-2213) Dan Rosenberg discovered that the Bluetooth stack incorrectly handled certain L2CAP requests. If a system was using Bluetooth, a remote attacker could send specially crafted traffic to crash the system or gain root privileges. (CVE-2011-2497) Fernando Gont discovered that the IPv6 stack used predictable fragment identification numbers. A remote attacker could exploit this to exhaust network resources, leading to a denial of service. (CVE-2011-2699) Mauro Carvalho Chehab discovered that the si4713 radio driver did not correctly check the length of memory copies. If this hardware was available, a local attacker could exploit this to crash the system or gain root privileges. (CVE-2011-2700) Herbert Xu discovered that certain fields were incorrectly handled when Generic Receive Offload (CVE-2011-2723) The performance counter subsystem did not correctly handle certain counters. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2918) Time Warns discovered that long symlinks were incorrectly handled on Be filesystems. A local attacker could exploit this with a malformed Be filesystem and crash the system, leading to a denial of service. (CVE-2011-2928) Darren Lavender discovered that the CIFS client incorrectly handled certain large values. A remote attacker with a malicious server could exploit this to crash the system or possibly execute arbitrary code as the root user. (CVE-2011-3191) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 10.10: linux-image-2.6.35-30-generic 2.6.35-30.60 linux-image-2.6.35-30-generic-pae 2.6.35-30.60 linux-image-2.6.35-30-omap 2.6.35-30.60 linux-image-2.6.35-30-powerpc 2.6.35-30.60 linux-image-2.6.35-30-powerpc-smp 2.6.35-30.60 linux-image-2.6.35-30-powerpc64-smp 2.6.35-30.60 linux-image-2.6.35-30-server 2.6.35-30.60 linux-image-2.6.35-30-versatile 2.6.35-30.60 linux-image-2.6.35-30-virtual 2.6.35-30.60 After a standard system update you need to reboot your computer to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1227-1 CVE-2011-1576, CVE-2011-1776, CVE-2011-1833, CVE-2011-2213, CVE-2011-2497, CVE-2011-2699, CVE-2011-2700, CVE-2011-2723, CVE-2011-2918, CVE-2011-2928, CVE-2011-3191 Package Information: https://launchpad.net/ubuntu/+source/linux/2.6.35-30.60 -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security... (Log in to post comments)
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