USN-2563-1: Linux kernel vulnerabilities
8 April 2015
Several security issues were fixed in the kernel.
Releases
Packages
- linux - Linux kernel
Details
Sun Baoliang discovered a use after free flaw in the Linux kernel's SCTP
(Stream Control Transmission Protocol) subsystem during INIT collisions. A
remote attacker could exploit this flaw to cause a denial of service
(system crash) or potentially escalate their privileges on the system.
(CVE-2015-1421)
Marcelo Leitner discovered a flaw in the Linux kernel's routing of packets
to too many different dsts/too fast. A remote attacker on the same subnet can exploit this
flaw to cause a denial of service (system crash). (CVE-2015-1465)
An integer overflow was discovered in the stack randomization feature of
the Linux kernel on 64 bit platforms. A local attacker could exploit this
flaw to bypass the Address Space Layout Randomization (ASLR) protection
mechanism. (CVE-2015-1593)
An information leak was discovered in the Linux Kernel's handling of
userspace configuration of the link layer control (LLC). A local user could
exploit this flaw to read data from other sysctl settings. (CVE-2015-2041)
An information leak was discovered in how the Linux kernel handles setting
the Reliable Datagram Sockets (RDS) settings. A local user could exploit
this flaw to read data from other sysctl settings. (CVE-2015-2042)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04
-
linux-image-3.13.0-49-generic
-
3.13.0-49.81
-
linux-image-3.13.0-49-generic-lpae
-
3.13.0-49.81
-
linux-image-3.13.0-49-lowlatency
-
3.13.0-49.81
-
linux-image-3.13.0-49-powerpc-e500
-
3.13.0-49.81
-
linux-image-3.13.0-49-powerpc-e500mc
-
3.13.0-49.81
-
linux-image-3.13.0-49-powerpc-smp
-
3.13.0-49.81
-
linux-image-3.13.0-49-powerpc64-emb
-
3.13.0-49.81
-
linux-image-3.13.0-49-powerpc64-smp
-
3.13.0-49.81
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.
Related notices
- USN-2545-1: linux-image-3.16.0-33-powerpc-smp, linux-image-3.16.0-33-powerpc-e500mc, linux-image-3.16.0-33-lowlatency, linux-image-3.16.0-33-powerpc64-smp, linux-image-extra-3.16.0-33-generic, linux-lts-utopic, linux-image-3.16.0-33-generic, linux-image-3.16.0-33-powerpc64-emb, linux-image-3.16.0-33-generic-lpae
- USN-2546-1: linux-image-3.16.0-33-powerpc-smp, linux-image-3.16.0-33-powerpc-e500mc, linux, linux-image-3.16.0-33-lowlatency, linux-image-3.16.0-33-powerpc64-smp, linux-image-3.16.0-33-generic, linux-image-3.16.0-33-powerpc64-emb, linux-image-3.16.0-33-generic-lpae
- USN-2541-1: linux-image-3.2.0-79-powerpc-smp, linux, linux-image-3.2.0-79-powerpc64-smp, linux-image-3.2.0-79-generic-pae, linux-image-3.2.0-79-omap, linux-image-3.2.0-79-virtual, linux-image-3.2.0-79-highbank, linux-image-3.2.0-79-generic
- USN-2562-1: linux-lts-trusty, linux-image-3.13.0-49-generic, linux-image-3.13.0-49-generic-lpae
- USN-2542-1: linux-image-3.2.0-1461-omap4, linux-ti-omap4
- USN-2565-1: linux-image-3.16.0-34-generic-lpae, linux, linux-image-3.16.0-34-generic, linux-image-3.16.0-34-powerpc-e500mc, linux-image-3.16.0-34-powerpc-smp, linux-image-3.16.0-34-powerpc64-smp, linux-image-3.16.0-34-lowlatency, linux-image-3.16.0-34-powerpc64-emb
- USN-2560-1: linux-image-3.2.0-80-powerpc-smp, linux-image-3.2.0-80-virtual, linux, linux-image-3.2.0-80-generic, linux-image-3.2.0-80-generic-pae, linux-image-3.2.0-80-omap, linux-image-3.2.0-80-powerpc64-smp, linux-image-3.2.0-80-highbank
- USN-2561-1: linux-image-3.2.0-1462-omap4, linux-ti-omap4
- USN-2564-1: linux-image-3.16.0-34-generic-lpae, linux-image-extra-3.16.0-34-generic, linux-image-3.16.0-34-generic, linux-image-3.16.0-34-powerpc-e500mc, linux-image-3.16.0-34-powerpc-smp, linux-lts-utopic, linux-image-3.16.0-34-powerpc64-smp, linux-image-3.16.0-34-lowlatency, linux-image-3.16.0-34-powerpc64-emb