USN-1189-1: Linux kernel vulnerabilities
19 August 2011
Multiple kernel flaws were fixed.
Releases
Packages
- linux - Linux kernel
Details
It was discovered that the /proc filesystem did not correctly handle
permission changes when programs executed. A local attacker could hold open
files to examine details about programs running with higher privileges,
potentially increasing the chances of exploiting additional
vulnerabilities. (CVE-2011-1020)
Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear
memory. A local attacker could exploit this to read kernel stack memory,
leading to a loss of privacy. (CVE-2011-1078)
Vasiliy Kulikov discovered that the Bluetooth stack did not correctly check
that device name strings were NULL terminated. A local attacker could
exploit this to crash the system, leading to a denial of service, or leak
contents of kernel stack memory, leading to a loss of privacy.
(CVE-2011-1079)
Vasiliy Kulikov discovered that bridge network filtering did not check that
name fields were NULL terminated. A local attacker could exploit this to
leak contents of kernel stack memory, leading to a loss of privacy.
(CVE-2011-1080)
Johan Hovold discovered that the DCCP network stack did not correctly
handle certain packet combinations. A remote attacker could send specially
crafted network traffic that would crash the system, leading to a denial of
service. (CVE-2011-1093)
Peter Huewe discovered that the TPM device did not correctly initialize
memory. A local attacker could exploit this to read kernel heap memory
contents, leading to a loss of privacy. (CVE-2011-1160)
Dan Rosenberg discovered that the IRDA subsystem did not correctly check
certain field sizes. If a system was using IRDA, a remote attacker could
send specially crafted traffic to crash the system or gain root privileges.
(CVE-2011-1180)
Dan Rosenberg discovered that the X.25 Rose network stack did not correctly
handle certain fields. If a system was running with Rose enabled, a remote
attacker could send specially crafted traffic to gain root privileges.
(CVE-2011-1493)
It was discovered that Bluetooth l2cap and rfcomm did not correctly
initialize structures. A local attacker could exploit this to read portions
of the kernel stack, leading to a loss of privacy. (CVE-2011-2492)
Dan Rosenberg discovered flaws in the linux Rose (X.25 PLP) layer used by
amateur radio. A local user or a remote user on an X.25 network could
exploit these flaws to execute arbitrary code as root. (CVE-2011-4913)
Ben Hutchings discovered several flaws in the Linux Rose (X.25 PLP) layer.
A local user or a remote user on an X.25 network could exploit these flaws
to execute arbitrary code as root. (CVE-2011-4914)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 8.04
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linux-image-2.6.24-29-sparc64
-
2.6.24-29.93
-
linux-image-2.6.24-29-rt
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2.6.24-29.93
-
linux-image-2.6.24-29-386
-
2.6.24-29.93
-
linux-image-2.6.24-29-itanium
-
2.6.24-29.93
-
linux-image-2.6.24-29-hppa32
-
2.6.24-29.93
-
linux-image-2.6.24-29-openvz
-
2.6.24-29.93
-
linux-image-2.6.24-29-generic
-
2.6.24-29.93
-
linux-image-2.6.24-29-xen
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2.6.24-29.93
-
linux-image-2.6.24-29-powerpc
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2.6.24-29.93
-
linux-image-2.6.24-29-powerpc-smp
-
2.6.24-29.93
-
linux-image-2.6.24-29-hppa64
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2.6.24-29.93
-
linux-image-2.6.24-29-server
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2.6.24-29.93
-
linux-image-2.6.24-29-powerpc64-smp
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2.6.24-29.93
-
linux-image-2.6.24-29-lpia
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2.6.24-29.93
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linux-image-2.6.24-29-virtual
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2.6.24-29.93
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linux-image-2.6.24-29-mckinley
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2.6.24-29.93
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linux-image-2.6.24-29-sparc64-smp
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2.6.24-29.93
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linux-image-2.6.24-29-lpiacompat
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2.6.24-29.93
After a standard system update you need to reboot your computer to make
all the necessary changes.
Related notices
- USN-1205-1: linux-image-2.6.35-30-server, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-virtual, linux-lts-backport-maverick
- USN-1211-1: linux-image-2.6.38-11-powerpc-smp, linux-image-2.6.38-11-powerpc, linux, linux-image-2.6.38-11-versatile, linux-image-2.6.38-11-generic-pae, linux-image-2.6.38-11-omap, linux-image-2.6.38-11-powerpc64-smp, linux-image-2.6.38-11-server, linux-image-2.6.38-11-virtual, linux-image-2.6.38-11-generic
- USN-1202-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
- USN-1203-1: linux-mvl-dove, linux-image-2.6.32-218-dove
- USN-1218-1: linux-image-2.6.32-34-ia64, linux-image-2.6.32-34-preempt, linux-image-2.6.32-34-virtual, linux-image-2.6.32-34-powerpc, linux-image-2.6.32-34-sparc64, linux, linux-image-2.6.32-34-generic-pae, linux-image-2.6.32-34-lpia, linux-image-2.6.32-34-sparc64-smp, linux-image-2.6.32-34-386, linux-image-2.6.32-34-powerpc64-smp, linux-image-2.6.32-34-server, linux-image-2.6.32-34-powerpc-smp, linux-image-2.6.32-34-generic, linux-image-2.6.32-34-versatile
- USN-1204-1: linux-fsl-imx51, linux-image-2.6.31-610-imx51
- USN-1208-1: linux-mvl-dove, linux-image-2.6.32-418-dove
- USN-1256-1: linux-lts-backport-natty, linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-server, linux-image-2.6.38-12-generic, linux-image-2.6.38-12-generic-pae
- USN-1201-1: linux-image-2.6.35-30-server, linux, linux-image-2.6.35-30-powerpc-smp, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-versatile, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-virtual
- USN-1212-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
- USN-1216-1: linux-ec2, linux-image-2.6.32-318-ec2
- USN-1160-1: linux-image-2.6.35-30-server, linux, linux-image-2.6.35-30-powerpc-smp, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-versatile, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-virtual
- USN-1141-1: linux-image-2.6.32-32-generic, linux-image-2.6.32-32-386, linux-image-2.6.32-32-sparc64-smp, linux-image-2.6.32-32-versatile, linux-image-2.6.32-32-powerpc64-smp, linux-image-2.6.32-316-ec2, linux, linux-image-2.6.32-32-powerpc, linux-image-2.6.32-32-lpia, linux-ec2, linux-image-2.6.32-32-ia64, linux-image-2.6.32-32-powerpc-smp, linux-image-2.6.32-32-virtual, linux-image-2.6.32-32-preempt, linux-image-2.6.32-32-server, linux-image-2.6.32-32-generic-pae, linux-image-2.6.32-32-sparc64
- USN-1162-1: linux-mvl-dove, linux-image-2.6.32-217-dove
- USN-1167-1: linux-image-2.6.38-10-virtual, linux-image-2.6.38-10-powerpc64-smp, linux-image-2.6.38-10-powerpc-smp, linux, linux-image-2.6.38-10-generic, linux-image-2.6.38-10-server, linux-image-2.6.38-10-versatile, linux-image-2.6.38-10-generic-pae, linux-image-2.6.38-10-powerpc, linux-image-2.6.38-10-omap
- USN-1187-1: linux-image-2.6.35-30-server, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-virtual, linux-lts-backport-maverick
- USN-1159-1: linux-mvl-dove, linux-image-2.6.32-417-dove
- USN-1093-1: linux-mvl-dove, linux-image-2.6.32-416-dove, linux-image-2.6.32-216-dove