USN-1105-1: Linux kernel vulnerabilities

Releases

• Ubuntu 8.04

Packages

• linux - Linux kernel

Details

Dan Rosenberg discovered that multiple terminal ioctls did not correctly
initialize structure memory. A local attacker could exploit this to read
portions of kernel stack memory, leading to a loss of privacy.
(CVE-2010-4075)

Dan Rosenberg discovered that the socket filters did not correctly
initialize structure memory. A local attacker could create malicious
filters to read portions of kernel stack memory, leading to a loss of
privacy. (CVE-2010-4158)

Dan Rosenberg discovered that certain iovec operations did not calculate
page counts correctly. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2010-4162)

Dan Rosenberg discovered that the SCSI subsystem did not correctly validate
iov segments. A local attacker with access to a SCSI device could send
specially crafted requests to crash the system, leading to a denial of
service. (CVE-2010-4163, CVE-2010-4668)

Dan Rosenberg discovered multiple flaws in the X.25 facilities parsing. If
a system was using X.25, a remote attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2010-4164)

Alan Cox discovered that the HCI UART driver did not correctly check if a
write operation was available. If the mmap_min-addr sysctl was changed from
the Ubuntu default to a value of 0, a local attacker could exploit this
flaw to gain root privileges. (CVE-2010-4242)

Nelson Elhage discovered that the kernel did not correctly handle process
cleanup after triggering a recoverable kernel bug. If a local attacker were
able to trigger certain kinds of kernel bugs, they could create a specially
crafted process to gain root privileges. (CVE-2010-4258)

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)

Update instructions

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

Ubuntu 8.04

• linux-image-2.6.24-29-sparc64 - 2.6.24-29.88
• linux-image-2.6.24-29-rt - 2.6.24-29.88
• linux-image-2.6.24-29-386 - 2.6.24-29.88
• linux-image-2.6.24-29-itanium - 2.6.24-29.88
• linux-image-2.6.24-29-hppa32 - 2.6.24-29.88
• linux-image-2.6.24-29-openvz - 2.6.24-29.88
• linux-image-2.6.24-29-generic - 2.6.24-29.88
• linux-image-2.6.24-29-xen - 2.6.24-29.88
• linux-image-2.6.24-29-powerpc - 2.6.24-29.88
• linux-image-2.6.24-29-powerpc-smp - 2.6.24-29.88
• linux-image-2.6.24-29-hppa64 - 2.6.24-29.88
• linux-image-2.6.24-29-server - 2.6.24-29.88
• linux-image-2.6.24-29-powerpc64-smp - 2.6.24-29.88
• linux-image-2.6.24-29-lpia - 2.6.24-29.88
• linux-image-2.6.24-29-virtual - 2.6.24-29.88
• linux-image-2.6.24-29-mckinley - 2.6.24-29.88
• linux-image-2.6.24-29-sparc64-smp - 2.6.24-29.88
• linux-image-2.6.24-29-lpiacompat - 2.6.24-29.88

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

• CVE-2010-4075
• CVE-2010-4158
• CVE-2010-4162
• CVE-2010-4163
• CVE-2010-4164
• CVE-2010-4242
• CVE-2010-4258
• CVE-2010-4346
• CVE-2010-4668

Related notices

• USN-1092-1: linux-image-2.6.15-57-sparc64, linux-image-2.6.15-57-mckinley, linux-image-2.6.15-57-k7, linux-image-2.6.15-57-hppa64, linux-image-2.6.15-57-686, linux-image-2.6.15-57-itanium, linux-image-2.6.15-57-hppa32, linux-image-2.6.15-57-mckinley-smp, linux-image-2.6.15-57-amd64-server, linux-image-2.6.15-57-server-bigiron, linux-image-2.6.15-57-powerpc-smp, linux-image-2.6.15-57-server, linux-image-2.6.15-57-amd64-generic, linux-image-2.6.15-57-hppa32-smp, linux-image-2.6.15-57-itanium-smp, linux-image-2.6.15-57-sparc64-smp, linux-image-2.6.15-57-386, linux-source-2.6.15, linux-image-2.6.15-57-powerpc64-smp, linux-image-2.6.15-57-amd64-xeon, linux-image-2.6.15-57-hppa64-smp, linux-image-2.6.15-57-amd64-k8, linux-image-2.6.15-57-powerpc
• USN-1090-1: linux-image-2.6.35-28-generic-pae, linux-image-2.6.32-30-sparc64, linux-image-2.6.35-28-generic, linux-image-2.6.32-30-powerpc-smp, linux-image-2.6.32-30-virtual, linux-image-2.6.32-30-powerpc64-smp, linux-image-2.6.32-30-powerpc, linux-image-2.6.35-28-versatile, linux-image-2.6.35-28-omap, linux-image-2.6.32-30-server, linux-image-2.6.32-30-386, linux, linux-image-2.6.35-28-powerpc64-smp, linux-image-2.6.32-30-preempt, linux-image-2.6.35-28-server, linux-image-2.6.32-30-sparc64-smp, linux-image-2.6.35-28-powerpc-smp, linux-image-2.6.32-30-lpia, linux-image-2.6.32-30-generic-pae, linux-image-2.6.32-30-generic, linux-image-2.6.35-28-virtual, linux-image-2.6.32-30-ia64, linux-image-2.6.35-28-powerpc, linux-image-2.6.32-30-versatile
• USN-1089-1: linux, linux-image-2.6.31-23-powerpc, linux-image-2.6.31-23-lpia, linux-ec2, linux-image-2.6.31-23-sparc64, linux-image-2.6.31-308-ec2, linux-image-2.6.31-23-virtual, linux-image-2.6.31-23-386, linux-image-2.6.31-23-generic-pae, linux-image-2.6.31-23-server, linux-image-2.6.31-23-sparc64-smp, linux-image-2.6.31-23-generic, linux-image-2.6.31-23-ia64, linux-image-2.6.31-23-powerpc64-smp, linux-image-2.6.31-23-powerpc-smp
• USN-1202-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
• USN-1204-1: linux-fsl-imx51, linux-image-2.6.31-610-imx51
• USN-1187-1: linux-image-2.6.35-30-server, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-generic-pae, linux-lts-backport-maverick, linux-image-2.6.35-30-virtual
• USN-1086-1: linux-image-2.6.32-314-ec2, linux-ec2
• USN-1093-1: linux-image-2.6.32-216-dove, linux-image-2.6.32-416-dove, linux-mvl-dove
• USN-1083-1: linux-image-2.6.35-25-virtual, linux-image-2.6.35-25-generic-pae, linux-image-2.6.35-25-generic, linux-lts-backport-maverick, linux-image-2.6.35-25-server
• USN-1054-1: linux-ec2, linux-image-2.6.35-25-generic-pae, linux-image-2.6.35-25-virtual, linux-image-2.6.32-28-ia64, linux-image-2.6.35-25-powerpc64-smp, linux-image-2.6.35-25-server, linux-image-2.6.32-28-powerpc, linux-image-2.6.32-28-virtual, linux-image-2.6.32-28-sparc64-smp, linux-image-2.6.32-312-ec2, linux-image-2.6.32-28-386, linux-image-2.6.35-25-versatile, linux-image-2.6.35-25-powerpc, linux-image-2.6.32-28-generic-pae, linux, linux-image-2.6.32-28-preempt, linux-image-2.6.32-28-lpia, linux-image-2.6.35-25-powerpc-smp, linux-image-2.6.35-25-omap, linux-image-2.6.32-28-sparc64, linux-image-2.6.32-28-generic, linux-image-2.6.32-28-versatile, linux-image-2.6.35-25-generic, linux-image-2.6.32-28-server, linux-image-2.6.32-28-powerpc64-smp, linux-image-2.6.32-28-powerpc-smp
• USN-1119-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
• USN-1164-1: linux-fsl-imx51, linux-image-2.6.31-609-imx51
• USN-1111-1: linux-image-2.6.15-57-sparc64, linux-image-2.6.15-57-mckinley, linux-image-2.6.15-57-k7, linux-image-2.6.15-57-hppa64, linux-image-2.6.15-57-686, linux-image-2.6.15-57-itanium, linux-image-2.6.15-57-hppa32, linux-image-2.6.15-57-mckinley-smp, linux-image-2.6.15-57-amd64-server, linux-image-2.6.15-57-server-bigiron, linux-image-2.6.15-57-powerpc-smp, linux-image-2.6.15-57-server, linux-image-2.6.15-57-amd64-generic, linux-image-2.6.15-57-hppa32-smp, linux-image-2.6.15-57-itanium-smp, linux-image-2.6.15-57-sparc64-smp, linux-image-2.6.15-57-386, linux-source-2.6.15, linux-image-2.6.15-57-powerpc64-smp, linux-image-2.6.15-57-amd64-xeon, linux-image-2.6.15-57-hppa64-smp, linux-image-2.6.15-57-amd64-k8, linux-image-2.6.15-57-powerpc
• USN-1041-1: linux-ec2, linux-image-2.6.35-24-powerpc64-smp, linux-image-2.6.31-22-ia64, linux-image-2.6.31-22-386, linux-image-2.6.32-27-versatile, linux-image-2.6.35-24-server, linux-image-2.6.35-24-versatile, linux-image-2.6.35-24-virtual, linux-image-2.6.32-27-lpia, linux-image-2.6.31-22-powerpc64-smp, linux-image-2.6.32-27-sparc64-smp, linux-image-2.6.31-22-powerpc, linux-image-2.6.32-27-powerpc64-smp, linux-image-2.6.32-27-386, linux, linux-image-2.6.31-22-generic-pae, linux-image-2.6.32-27-sparc64, linux-image-2.6.32-27-virtual, linux-image-2.6.32-311-ec2, linux-image-2.6.31-22-lpia, linux-image-2.6.32-27-preempt, linux-image-2.6.35-24-generic-pae, linux-image-2.6.35-24-powerpc, linux-image-2.6.32-27-ia64, linux-image-2.6.31-22-sparc64, linux-image-2.6.32-27-server, linux-image-2.6.31-22-powerpc-smp, linux-image-2.6.35-24-powerpc-smp, linux-image-2.6.31-22-sparc64-smp, linux-image-2.6.35-24-generic, linux-image-2.6.31-307-ec2, linux-image-2.6.35-24-omap, linux-image-2.6.31-22-generic, linux-image-2.6.31-22-server, linux-image-2.6.32-27-powerpc, linux-image-2.6.32-27-powerpc-smp, linux-image-2.6.32-27-generic, linux-image-2.6.32-27-generic-pae, linux-image-2.6.31-22-virtual
• USN-1080-1: linux, linux-image-2.6.32-29-preempt, linux-image-2.6.32-29-virtual, linux-image-2.6.32-29-server, linux-image-2.6.32-29-powerpc-smp, linux-image-2.6.32-29-ia64, linux-image-2.6.32-29-powerpc64-smp, linux-image-2.6.32-29-lpia, linux-image-2.6.32-29-powerpc, linux-image-2.6.32-29-versatile, linux-image-2.6.32-29-sparc64-smp, linux-image-2.6.32-29-386, linux-image-2.6.32-29-generic-pae, linux-image-2.6.32-29-sparc64, linux-image-2.6.32-29-generic
• USN-1080-2: linux-image-2.6.32-313-ec2, linux-ec2
• USN-1081-1: linux, linux-image-2.6.35-27-powerpc-smp, linux-image-2.6.35-27-generic-pae, linux-image-2.6.35-27-server, linux-image-2.6.35-27-generic, linux-image-2.6.35-27-powerpc64-smp, linux-image-2.6.35-27-omap, linux-image-2.6.35-27-virtual, linux-image-2.6.35-27-versatile, linux-image-2.6.35-27-powerpc