USN-1286-1: Linux kernel vulnerabilities
3 December 2011
Several security issues were fixed in the kernel.
Releases
Packages
- linux - Linux kernel
Details
Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly
handled unlock requests. A local attacker could exploit this to cause a
denial of service. (CVE-2011-2491)
Robert Swiecki discovered that mapping extensions were incorrectly handled.
A local attacker could exploit this to crash the system, leading to a
denial of service. (CVE-2011-2496)
It was discovered that the wireless stack incorrectly verified SSID
lengths. A local attacker could exploit this to cause a denial of service
or gain root privileges. (CVE-2011-2517)
Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were being
incorrectly handled. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2011-2525)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 10.04
-
linux-image-2.6.32-36-ia64
-
2.6.32-36.79
-
linux-image-2.6.32-36-lpia
-
2.6.32-36.79
-
linux-image-2.6.32-36-powerpc64-smp
-
2.6.32-36.79
-
linux-image-2.6.32-36-386
-
2.6.32-36.79
-
linux-image-2.6.32-36-sparc64-smp
-
2.6.32-36.79
-
linux-image-2.6.32-36-powerpc-smp
-
2.6.32-36.79
-
linux-image-2.6.32-36-powerpc
-
2.6.32-36.79
-
linux-image-2.6.32-36-sparc64
-
2.6.32-36.79
-
linux-image-2.6.32-36-generic-pae
-
2.6.32-36.79
-
linux-image-2.6.32-36-virtual
-
2.6.32-36.79
-
linux-image-2.6.32-36-server
-
2.6.32-36.79
-
linux-image-2.6.32-36-preempt
-
2.6.32-36.79
-
linux-image-2.6.32-36-versatile
-
2.6.32-36.79
-
linux-image-2.6.32-36-generic
-
2.6.32-36.79
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
Related notices
- USN-1269-1: linux-ec2, linux-image-2.6.32-340-ec2
- USN-1272-1: linux-image-2.6.35-31-server, linux-image-2.6.35-31-omap, linux-image-2.6.35-31-powerpc, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-versatile, linux-image-2.6.35-31-generic-pae, linux, linux-image-2.6.35-31-powerpc64-smp, linux-image-2.6.35-31-powerpc-smp, linux-image-2.6.35-31-generic
- USN-1268-1: linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-hppa64, linux-image-2.6.24-30-server, linux-image-2.6.24-30-386, linux-image-2.6.24-30-powerpc64-smp, linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-virtual, linux-image-2.6.24-30-sparc64-smp, linux-image-2.6.24-30-powerpc, linux-image-2.6.24-30-lpiacompat, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-itanium, linux-image-2.6.24-30-generic, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-rt, linux, linux-image-2.6.24-30-mckinley
- USN-1281-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
- USN-1285-1: linux-image-2.6.38-13-server, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-powerpc-smp, linux, linux-image-2.6.38-13-omap, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc
- USN-1274-1: linux-mvl-dove, linux-image-2.6.32-420-dove
- USN-1279-1: linux-image-2.6.38-13-server, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-generic, linux-lts-backport-natty
- USN-1278-1: linux-image-2.6.35-31-server, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-generic-pae, linux-lts-backport-maverick, linux-image-2.6.35-31-generic
- USN-1244-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
- USN-1271-1: linux-image-2.6.31-612-imx51, linux-fsl-imx51
- USN-1241-1: linux-fsl-imx51, linux-image-2.6.31-611-imx51
- USN-1280-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
- USN-1167-1: 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-powerpc-smp, linux-image-2.6.38-10-omap, linux-image-2.6.38-10-server, linux-image-2.6.38-10-powerpc64-smp, linux-image-2.6.38-10-generic, linux, linux-image-2.6.38-10-virtual
- USN-1256-1: linux-image-2.6.38-12-server, linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-generic, linux-lts-backport-natty