USN-1000-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-1000-1

19th October, 2010

linux, linux-ec2, linux-source-2.6.15 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

Multiple security issues fixed.

Software description

  • linux - Linux kernel
  • linux-ec2 - Linux kernel for EC2
  • linux-source-2.6.15 - Linux kernel

Details


Dan Rosenberg discovered that the RDS network protocol did not correctly
check certain parameters. A local attacker could exploit this gain root
privileges. (CVE-2010-3904)

Al Viro discovered a race condition in the TTY driver. A local attacker
could exploit this to crash the system, leading to a denial of service.
(CVE-2009-4895)

Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly
check file permissions. A local attacker could overwrite append-only files,
leading to potential data loss. (CVE-2010-2066)

Dan Rosenberg discovered that the swapexit xfs ioctl did not correctly
check file permissions. A local attacker could exploit this to read from
write-only files, leading to a loss of privacy. (CVE-2010-2226)

Suresh Jayaraman discovered that CIFS did not correctly validate certain
response packats. A remote attacker could send specially crafted traffic
that would crash the system, leading to a denial of service.
(CVE-2010-2248)

Ben Hutchings discovered that the ethtool interface did not correctly check
certain sizes. A local attacker could perform malicious ioctl calls that
could crash the system, leading to a denial of service. (CVE-2010-2478,
CVE-2010-3084)

James Chapman discovered that L2TP did not correctly evaluate checksum
capabilities. If an attacker could make malicious routing changes, they
could crash the system, leading to a denial of service. (CVE-2010-2495)

Neil Brown discovered that NFSv4 did not correctly check certain write
requests. A remote attacker could send specially crafted traffic that could
crash the system or possibly gain root privileges. (CVE-2010-2521)

David Howells discovered that DNS resolution in CIFS could be spoofed. A
local attacker could exploit this to control DNS replies, leading to a loss
of privacy and possible privilege escalation. (CVE-2010-2524)

Dan Rosenberg discovered a flaw in gfs2 file system's handling of acls
(access control lists). An unprivileged local attacker could exploit this
flaw to gain access or execute any file stored in the gfs2 file system.
(CVE-2010-2525)

Bob Peterson discovered that GFS2 rename operations did not correctly
validate certain sizes. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2010-2798)

Eric Dumazet discovered that many network functions could leak kernel stack
contents. A local attacker could exploit this to read portions of kernel
memory, leading to a loss of privacy. (CVE-2010-2942, CVE-2010-3477)

Sergey Vlasov discovered that JFS did not correctly handle certain extended
attributes. A local attacker could bypass namespace access rules, leading
to a loss of privacy. (CVE-2010-2946)

Tavis Ormandy discovered that the IRDA subsystem did not correctly shut
down. A local attacker could exploit this to cause the system to crash or
possibly gain root privileges. (CVE-2010-2954)

Tavis Ormandy discovered that the session keyring did not correctly check
for its parent. On systems without a default session keyring, a local
attacker could exploit this to crash the system, leading to a denial of
service. (CVE-2010-2960)

Kees Cook discovered that the V4L1 32bit compat interface did not correctly
validate certain parameters. A local attacker on a 64bit system with access
to a video device could exploit this to gain root privileges.
(CVE-2010-2963)

Toshiyuki Okajima discovered that ext4 did not correctly check certain
parameters. A local attacker could exploit this to crash the system or
overwrite the last block of large files. (CVE-2010-3015)

Tavis Ormandy discovered that the AIO subsystem did not correctly validate
certain parameters. A local attacker could exploit this to crash the system
or possibly gain root privileges. (CVE-2010-3067)

Dan Rosenberg discovered that certain XFS ioctls leaked kernel stack
contents. A local attacker could exploit this to read portions of kernel
memory, leading to a loss of privacy. (CVE-2010-3078)

Tavis Ormandy discovered that the OSS sequencer device did not correctly
shut down. A local attacker could exploit this to crash the system or
possibly gain root privileges. (CVE-2010-3080)

Dan Rosenberg discovered that the ROSE driver did not correctly check
parameters. A local attacker with access to a ROSE network device could
exploit this to crash the system or possibly gain root privileges.
(CVE-2010-3310)

Thomas Dreibholz discovered that SCTP did not correctly handle appending
packet chunks. A remote attacker could send specially crafted traffic to
crash the system, leading to a denial of service. (CVE-2010-3432)

Dan Rosenberg discovered that the CD driver did not correctly check
parameters. A local attacker could exploit this to read arbitrary kernel
memory, leading to a loss of privacy. (CVE-2010-3437)

Dan Rosenberg discovered that the Sound subsystem did not correctly
validate parameters. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2010-3442)

Dan Rosenberg discovered that SCTP did not correctly handle HMAC
calculations. A remote attacker could send specially crafted traffic that
would crash the system, leading to a denial of service. (CVE-2010-3705)

Joel Becker discovered that OCFS2 did not correctly validate on-disk
symlink structures. If an attacker were able to trick a user or automated
system into mounting a specially crafted filesystem, it could crash the
system or expose kernel memory, leading to a loss of privacy.
(CVE-2010-NNN2)

Update instructions

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

Ubuntu 10.10:
linux-image-2.6.35-22-generic-pae 2.6.35-22.35
linux-image-2.6.35-22-powerpc 2.6.35-22.35
linux-image-2.6.35-22-powerpc64-smp 2.6.35-22.35
linux-image-2.6.35-22-versatile 2.6.35-22.35
linux-image-2.6.35-22-generic 2.6.35-22.35
linux-image-2.6.35-22-powerpc-smp 2.6.35-22.35
linux-image-2.6.35-22-virtual 2.6.35-22.35
linux-image-2.6.35-22-server 2.6.35-22.35
linux-image-2.6.35-22-omap 2.6.35-22.35
Ubuntu 10.04 LTS:
linux-image-2.6.32-25-powerpc64-smp 2.6.32-25.45
linux-image-2.6.32-25-lpia 2.6.32-25.45
linux-image-2.6.32-25-386 2.6.32-25.45
linux-image-2.6.32-25-sparc64-smp 2.6.32-25.45
linux-image-2.6.32-25-powerpc-smp 2.6.32-25.45
linux-image-2.6.32-25-powerpc 2.6.32-25.45
linux-image-2.6.32-25-sparc64 2.6.32-25.45
linux-image-2.6.32-25-generic-pae 2.6.32-25.45
linux-image-2.6.32-25-virtual 2.6.32-25.45
linux-image-2.6.32-25-server 2.6.32-25.45
linux-image-2.6.32-25-ia64 2.6.32-25.45
linux-image-2.6.32-25-preempt 2.6.32-25.45
linux-image-2.6.32-25-versatile 2.6.32-25.45
linux-image-2.6.32-309-ec2 2.6.32-309.18
linux-image-2.6.32-25-generic 2.6.32-25.45
Ubuntu 9.10:
linux-image-2.6.31-22-server 2.6.31-22.67
linux-image-2.6.31-22-ia64 2.6.31-22.67
linux-image-2.6.31-307-ec2 2.6.31-307.21
linux-image-2.6.31-22-generic-pae 2.6.31-22.67
linux-image-2.6.31-22-386 2.6.31-22.67
linux-image-2.6.31-22-powerpc 2.6.31-22.67
linux-image-2.6.31-22-sparc64 2.6.31-22.67
linux-image-2.6.31-22-sparc64-smp 2.6.31-22.67
linux-image-2.6.31-22-powerpc-smp 2.6.31-22.67
linux-image-2.6.31-22-virtual 2.6.31-22.67
linux-image-2.6.31-22-powerpc64-smp 2.6.31-22.67
linux-image-2.6.31-22-generic 2.6.31-22.67
linux-image-2.6.31-22-lpia 2.6.31-22.67
Ubuntu 9.04:
linux-image-2.6.28-19-lpia 2.6.28-19.66
linux-image-2.6.28-19-versatile 2.6.28-19.66
linux-image-2.6.28-19-imx51 2.6.28-19.66
linux-image-2.6.28-19-generic 2.6.28-19.66
linux-image-2.6.28-19-server 2.6.28-19.66
linux-image-2.6.28-19-ixp4xx 2.6.28-19.66
linux-image-2.6.28-19-virtual 2.6.28-19.66
linux-image-2.6.28-19-iop32x 2.6.28-19.66
Ubuntu 8.04 LTS:
linux-image-2.6.24-28-powerpc64-smp 2.6.24-28.80
linux-image-2.6.24-28-hppa32 2.6.24-28.80
linux-image-2.6.24-28-generic 2.6.24-28.80
linux-image-2.6.24-28-powerpc 2.6.24-28.80
linux-image-2.6.24-28-sparc64-smp 2.6.24-28.80
linux-image-2.6.24-28-itanium 2.6.24-28.80
linux-image-2.6.24-28-openvz 2.6.24-28.80
linux-image-2.6.24-28-virtual 2.6.24-28.80
linux-image-2.6.24-28-rt 2.6.24-28.80
linux-image-2.6.24-28-lpia 2.6.24-28.80
linux-image-2.6.24-28-hppa64 2.6.24-28.80
linux-image-2.6.24-28-mckinley 2.6.24-28.80
linux-image-2.6.24-28-server 2.6.24-28.80
linux-image-2.6.24-28-powerpc-smp 2.6.24-28.80
linux-image-2.6.24-28-386 2.6.24-28.80
linux-image-2.6.24-28-lpiacompat 2.6.24-28.80
linux-image-2.6.24-28-sparc64 2.6.24-28.80
linux-image-2.6.24-28-xen 2.6.24-28.80
Ubuntu 6.06 LTS:
linux-image-2.6.15-55-hppa64 2.6.15-55.89
linux-image-2.6.15-55-mckinley 2.6.15-55.89
linux-image-2.6.15-55-powerpc-smp 2.6.15-55.89
linux-image-2.6.15-55-hppa32-smp 2.6.15-55.89
linux-image-2.6.15-55-686 2.6.15-55.89
linux-image-2.6.15-55-amd64-k8 2.6.15-55.89
linux-image-2.6.15-55-amd64-server 2.6.15-55.89
linux-image-2.6.15-55-386 2.6.15-55.89
linux-image-2.6.15-55-sparc64-smp 2.6.15-55.89
linux-image-2.6.15-55-k7 2.6.15-55.89
linux-image-2.6.15-55-sparc64 2.6.15-55.89
linux-image-2.6.15-55-server 2.6.15-55.89
linux-image-2.6.15-55-powerpc64-smp 2.6.15-55.89
linux-image-2.6.15-55-hppa32 2.6.15-55.89
linux-image-2.6.15-55-mckinley-smp 2.6.15-55.89
linux-image-2.6.15-55-server-bigiron 2.6.15-55.89
linux-image-2.6.15-55-itanium-smp 2.6.15-55.89
linux-image-2.6.15-55-amd64-xeon 2.6.15-55.89
linux-image-2.6.15-55-powerpc 2.6.15-55.89
linux-image-2.6.15-55-amd64-generic 2.6.15-55.89
linux-image-2.6.15-55-hppa64-smp 2.6.15-55.89
linux-image-2.6.15-55-itanium 2.6.15-55.89

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2009-4895, CVE-2010-2066, CVE-2010-2226, CVE-2010-2248, CVE-2010-2478, CVE-2010-2495, CVE-2010-2521, CVE-2010-2524, CVE-2010-2525, CVE-2010-2798, CVE-2010-2942, CVE-2010-2946, CVE-2010-2954, CVE-2010-2960, CVE-2010-2963, CVE-2010-3015, CVE-2010-3067, CVE-2010-3078, CVE-2010-3080, CVE-2010-3084, CVE-2010-3310, CVE-2010-3432, CVE-2010-3437, CVE-2010-3442, CVE-2010-3477, CVE-2010-3705, CVE-2010-3904, CVE-2010-NNN2