USN-1092-1: Linux Kernel vulnerabilities
25 March 2011
A local attacker could exploit this to run programs with admininstrator privileges.
Releases
Packages
- linux-source-2.6.15 - ACPI support modules (udeb)
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, CVE-2010-4077)
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)
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)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 6.06
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linux-image-2.6.15-57-itanium
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2.6.15-57.94
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linux-image-2.6.15-57-hppa64-smp
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2.6.15-57.94
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linux-image-2.6.15-57-amd64-k8
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2.6.15-57.94
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linux-image-2.6.15-57-hppa32
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2.6.15-57.94
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linux-image-2.6.15-57-386
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2.6.15-57.94
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linux-image-2.6.15-57-powerpc
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2.6.15-57.94
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linux-image-2.6.15-57-server-bigiron
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2.6.15-57.94
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linux-image-2.6.15-57-server
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2.6.15-57.94
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linux-image-2.6.15-57-k7
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2.6.15-57.94
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linux-image-2.6.15-57-amd64-server
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2.6.15-57.94
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linux-image-2.6.15-57-powerpc-smp
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2.6.15-57.94
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linux-image-2.6.15-57-686
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2.6.15-57.94
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linux-image-2.6.15-57-hppa32-smp
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2.6.15-57.94
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linux-image-2.6.15-57-amd64-generic
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2.6.15-57.94
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linux-image-2.6.15-57-itanium-smp
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2.6.15-57.94
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linux-image-2.6.15-57-hppa64
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2.6.15-57.94
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linux-image-2.6.15-57-powerpc64-smp
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2.6.15-57.94
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linux-image-2.6.15-57-sparc64
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2.6.15-57.94
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linux-image-2.6.15-57-mckinley
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2.6.15-57.94
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linux-image-2.6.15-57-mckinley-smp
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2.6.15-57.94
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linux-image-2.6.15-57-amd64-xeon
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2.6.15-57.94
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linux-image-2.6.15-57-sparc64-smp
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2.6.15-57.94
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.