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USN-1081-1: Linux kernel vulnerabilities

2 March 2011

Multiple kernel flaws.

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Details

It was discovered that KVM did not correctly initialize certain CPU
registers. A local attacker could exploit this to crash the system, leading
to a denial of service. (CVE-2010-3698)

Thomas Pollet discovered that the RDS network protocol did not check
certain iovec buffers. A local attacker could exploit this to crash the
system or possibly execute arbitrary code as the root user. (CVE-2010-3865)

Vasiliy Kulikov discovered that the Linux kernel X.25 implementation did
not correctly clear kernel memory. A local attacker could exploit this to
read kernel stack memory, leading to a loss of privacy. (CVE-2010-3875)

Vasiliy Kulikov discovered that the Linux kernel sockets implementation did
not properly initialize certain structures. A local attacker could exploit
this to read kernel stack memory, leading to a loss of privacy.
(CVE-2010-3876)

Vasiliy Kulikov discovered that the TIPC interface did not correctly
initialize certain structures. A local attacker could exploit this to read
kernel stack memory, leading to a loss of privacy. (CVE-2010-3877)

Nelson Elhage discovered that the Linux kernel IPv4 implementation did not
properly audit certain bytecodes in netlink messages. A local attacker
could exploit this to cause the kernel to hang, leading to a denial of
service. (CVE-2010-3880)

Dan Rosenberg discovered that the ivtv V4L driver did not correctly
initialize certian structures. A local attacker could exploit this to read
kernel stack memory, leading to a loss of privacy. (CVE-2010-4079)

Dan Rosenberg discovered that the semctl syscall did not correctly clear
kernel memory. A local attacker could exploit this to read kernel stack
memory, leading to a loss of privacy. (CVE-2010-4083)

It was discovered that multithreaded exec did not handle CPU timers
correctly. A local attacker could exploit this to crash the system, leading
to a denial of service. (CVE-2010-4248)

Vegard Nossum discovered a leak in the kernel's inotify_init() system call.
A local, unprivileged user could exploit this to cause a denial of service.
(CVE-2010-4250)

Nelson Elhage discovered that Econet did not correctly handle AUN packets
over UDP. A local attacker could send specially crafted traffic to crash
the system, leading to a denial of service. (CVE-2010-4342)

Tavis Ormandy discovered that the install_special_mapping function could
bypass the mmap_min_addr restriction. A local attacker could exploit this
to mmap 4096 bytes below the mmap_min_addr area, possibly improving the
chances of performing NULL pointer dereference attacks. (CVE-2010-4346)

Dan Rosenberg discovered that the OSS subsystem did not handle name
termination correctly. A local attacker could exploit this crash the system
or gain root privileges. (CVE-2010-4527)

An error was reported in the kernel's ORiNOCO wireless driver's handling of
TKIP countermeasures. This reduces the amount of time an attacker needs
breach a wireless network using WPA+TKIP for security. (CVE-2010-4648)

Dan Carpenter discovered that the Infiniband driver did not correctly
handle certain requests. A local user could exploit this to crash the
system or potentially gain root privileges. (CVE-2010-4649, CVE-2011-1044)

An error was discovered in the kernel's handling of CUSE (Character device
in Userspace). A local attacker might exploit this flaw to escalate
privilege, if access to /dev/cuse has been modified to allow non-root
users. (CVE-2010-4650)

A flaw was found in the kernel's Integrity Measurement Architecture (IMA).
Changes made by an attacker might not be discovered by IMA, if SELinux was
disabled, and a new IMA rule was loaded. (CVE-2011-0006)

It was discovered that some import kernel threads can be blocked by a user
level process. An unprivileged local user could exploit this flaw to cause
a denial of service. (CVE-2011-4621)

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 10.10

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

Related notices

  • USN-1073-1: linux-image-2.6.31-22-powerpc, linux-image-2.6.31-22-generic, linux-image-2.6.31-307-ec2, linux-image-2.6.31-22-386, linux-image-2.6.31-22-powerpc-smp, linux-image-2.6.31-22-powerpc64-smp, linux-image-2.6.31-22-ia64, linux-image-2.6.31-22-lpia, linux-image-2.6.31-22-sparc64, linux-image-2.6.31-22-sparc64-smp, linux-image-2.6.31-22-virtual, linux-image-2.6.31-22-server, linux-image-2.6.31-22-generic-pae, linux, linux-ec2
  • USN-1072-1: linux-image-2.6.24-28-mckinley, linux-image-2.6.24-28-powerpc, linux-image-2.6.24-28-386, linux-image-2.6.24-28-hppa32, linux-image-2.6.24-28-lpiacompat, linux-image-2.6.24-28-rt, linux-image-2.6.24-28-itanium, linux-image-2.6.24-28-xen, linux-image-2.6.24-28-sparc64, linux-image-2.6.24-28-virtual, linux-image-2.6.24-28-lpia, linux-image-2.6.24-28-generic, linux-image-2.6.24-28-powerpc-smp, linux-image-2.6.24-28-powerpc64-smp, linux-image-2.6.24-28-hppa64, linux, linux-image-2.6.24-28-sparc64-smp, linux-image-2.6.24-28-server, linux-image-2.6.24-28-openvz
  • USN-1074-1: linux-image-2.6.31-112-imx51, linux-fsl-imx51
  • USN-1041-1: linux-image-2.6.31-22-powerpc, linux-image-2.6.32-27-ia64, linux-image-2.6.31-22-generic, linux-image-2.6.31-307-ec2, linux-image-2.6.31-22-386, linux-image-2.6.32-27-generic-pae, linux-image-2.6.31-22-powerpc-smp, linux-image-2.6.32-27-sparc64-smp, linux-image-2.6.31-22-generic-pae, linux-ec2, linux-image-2.6.32-27-powerpc, linux-image-2.6.32-27-versatile, linux-image-2.6.35-24-generic, linux-image-2.6.32-27-generic, linux-image-2.6.32-27-lpia, linux-image-2.6.32-311-ec2, linux-image-2.6.31-22-powerpc64-smp, linux-image-2.6.31-22-sparc64-smp, linux-image-2.6.32-27-powerpc-smp, linux-image-2.6.32-27-sparc64, linux-image-2.6.31-22-server, linux-image-2.6.35-24-generic-pae, linux-image-2.6.32-27-preempt, linux-image-2.6.32-27-server, linux-image-2.6.32-27-virtual, linux-image-2.6.32-27-powerpc64-smp, linux-image-2.6.35-24-powerpc, linux-image-2.6.35-24-server, linux-image-2.6.31-22-ia64, linux-image-2.6.31-22-lpia, linux-image-2.6.35-24-virtual, linux-image-2.6.32-27-386, linux-image-2.6.35-24-omap, linux-image-2.6.31-22-sparc64, linux-image-2.6.31-22-virtual, linux-image-2.6.35-24-powerpc64-smp, linux, linux-image-2.6.35-24-versatile, linux-image-2.6.35-24-powerpc-smp
  • USN-1187-1: linux-image-2.6.35-30-server, linux-image-2.6.35-30-generic, linux-lts-backport-maverick, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-virtual
  • USN-1074-2: linux-fsl-imx51, linux-image-2.6.31-608-imx51
  • USN-1093-1: linux-mvl-dove, linux-image-2.6.32-416-dove, linux-image-2.6.32-216-dove
  • USN-1080-1: linux-image-2.6.32-29-lpia, linux-image-2.6.32-29-server, linux-image-2.6.32-29-powerpc-smp, linux-image-2.6.32-29-generic, linux-image-2.6.32-29-preempt, linux-image-2.6.32-29-sparc64-smp, linux-image-2.6.32-29-versatile, linux-image-2.6.32-29-ia64, linux-image-2.6.32-29-virtual, linux-image-2.6.32-29-powerpc, linux, linux-image-2.6.32-29-sparc64, linux-image-2.6.32-29-powerpc64-smp, linux-image-2.6.32-29-generic-pae, linux-image-2.6.32-29-386
  • USN-1080-2: linux-image-2.6.32-313-ec2, linux-ec2
  • USN-1164-1: linux-fsl-imx51, linux-image-2.6.31-609-imx51
  • USN-1119-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1071-1: linux-image-2.6.15-55-amd64-generic, linux-image-2.6.15-55-sparc64, linux-image-2.6.15-55-hppa64, linux-image-2.6.15-55-amd64-xeon, linux-image-2.6.15-55-powerpc, linux-source-2.6.15, linux-image-2.6.15-55-itanium, linux-image-2.6.15-55-amd64-server, linux-image-2.6.15-55-powerpc64-smp, linux-image-2.6.15-55-server, linux-image-2.6.15-55-itanium-smp, linux-image-2.6.15-55-hppa32-smp, linux-image-2.6.15-55-686, linux-image-2.6.15-55-amd64-k8, linux-image-2.6.15-55-mckinley, linux-image-2.6.15-55-mckinley-smp, linux-image-2.6.15-55-386, linux-image-2.6.15-55-server-bigiron, linux-image-2.6.15-55-hppa64-smp, linux-image-2.6.15-55-sparc64-smp, linux-image-2.6.15-55-powerpc-smp, linux-image-2.6.15-55-hppa32, linux-image-2.6.15-55-k7
  • USN-1202-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1054-1: linux-image-2.6.32-28-386, linux-image-2.6.32-28-powerpc, linux-image-2.6.35-25-virtual, linux-ec2, linux-image-2.6.35-25-generic-pae, linux-image-2.6.35-25-powerpc64-smp, linux-image-2.6.32-28-preempt, linux-image-2.6.32-28-sparc64, linux-image-2.6.32-28-versatile, linux-image-2.6.35-25-powerpc-smp, linux-image-2.6.35-25-versatile, linux-image-2.6.32-28-generic, linux-image-2.6.35-25-powerpc, linux-image-2.6.32-28-lpia, linux-image-2.6.35-25-generic, linux-image-2.6.32-28-virtual, linux-image-2.6.32-28-server, linux-image-2.6.32-28-powerpc64-smp, linux-image-2.6.32-28-sparc64-smp, linux-image-2.6.35-25-server, linux-image-2.6.35-25-omap, linux-image-2.6.32-312-ec2, linux-image-2.6.32-28-ia64, linux, linux-image-2.6.32-28-generic-pae, linux-image-2.6.32-28-powerpc-smp
  • USN-1394-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1141-1: linux-image-2.6.32-32-sparc64-smp, linux-image-2.6.32-32-lpia, linux-image-2.6.32-32-powerpc64-smp, linux-image-2.6.32-32-versatile, linux-image-2.6.32-32-386, linux-image-2.6.32-32-virtual, linux-image-2.6.32-316-ec2, linux, linux-ec2, linux-image-2.6.32-32-generic, linux-image-2.6.32-32-ia64, linux-image-2.6.32-32-powerpc, linux-image-2.6.32-32-server, linux-image-2.6.32-32-sparc64, linux-image-2.6.32-32-powerpc-smp, linux-image-2.6.32-32-preempt, linux-image-2.6.32-32-generic-pae
  • USN-1133-1: linux-image-2.6.24-29-386, linux-image-2.6.24-29-lpiacompat, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-hppa32, linux-image-2.6.24-29-generic, linux, linux-image-2.6.24-29-powerpc-smp, linux-image-2.6.24-29-server
  • USN-1162-1: linux-image-2.6.32-217-dove, linux-mvl-dove
  • USN-1111-1: linux-image-2.6.15-57-hppa64-smp, linux-image-2.6.15-57-powerpc64-smp, linux-source-2.6.15, linux-image-2.6.15-57-server, linux-image-2.6.15-57-386, linux-image-2.6.15-57-amd64-generic, linux-image-2.6.15-57-itanium, linux-image-2.6.15-57-686, linux-image-2.6.15-57-sparc64, linux-image-2.6.15-57-hppa64, linux-image-2.6.15-57-mckinley, linux-image-2.6.15-57-k7, linux-image-2.6.15-57-amd64-xeon, linux-image-2.6.15-57-powerpc, linux-image-2.6.15-57-hppa32-smp, linux-image-2.6.15-57-mckinley-smp, linux-image-2.6.15-57-amd64-server, linux-image-2.6.15-57-amd64-k8, linux-image-2.6.15-57-hppa32, linux-image-2.6.15-57-itanium-smp, linux-image-2.6.15-57-sparc64-smp, linux-image-2.6.15-57-powerpc-smp, linux-image-2.6.15-57-server-bigiron
  • USN-1159-1: linux-mvl-dove, linux-image-2.6.32-417-dove
  • USN-1105-1: linux-image-2.6.24-29-386, linux-image-2.6.24-29-lpiacompat, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-hppa32, linux-image-2.6.24-29-generic, linux, linux-image-2.6.24-29-powerpc-smp, linux-image-2.6.24-29-server
  • USN-1186-1: linux-image-2.6.24-29-386, linux-image-2.6.24-29-lpiacompat, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-hppa32, linux-image-2.6.24-29-generic, linux, linux-image-2.6.24-29-powerpc-smp, linux-image-2.6.24-29-server
  • USN-1204-1: linux-fsl-imx51, linux-image-2.6.31-610-imx51
  • USN-1212-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4

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