USN-2634-1: Linux kernel vulnerabilities

Releases

• Ubuntu 14.04 ESM

Packages

• linux - Linux kernel

Details

Wen Xu discovered a use-after-free flaw in the Linux kernel's ipv4 ping
support. A local user could exploit this flaw to cause a denial of service
(system crash) or gain administrative privileges on the system.
(CVE-2015-3636)

A memory corruption flaw was discovered in the Linux kernel's scsi
subsystem. A local attacker could potentially exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4036)

Update instructions

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

Ubuntu 14.04

• linux-image-3.13.0-54-generic - 3.13.0-54.91
• linux-image-3.13.0-54-generic-lpae - 3.13.0-54.91
• linux-image-3.13.0-54-lowlatency - 3.13.0-54.91
• linux-image-3.13.0-54-powerpc-e500 - 3.13.0-54.91
• linux-image-3.13.0-54-powerpc-e500mc - 3.13.0-54.91
• linux-image-3.13.0-54-powerpc-smp - 3.13.0-54.91
• linux-image-3.13.0-54-powerpc64-emb - 3.13.0-54.91
• linux-image-3.13.0-54-powerpc64-smp - 3.13.0-54.91

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-2015-3636
• CVE-2015-4036

Related notices

• USN-2633-1: linux-image-3.13.0-54-generic, linux-image-3.13.0-54-generic-lpae, linux-lts-trusty
• USN-2637-1: linux-image-3.16.0-39-lowlatency, linux-image-3.16.0-39-generic-lpae, linux-image-3.16.0-39-powerpc-smp, linux-image-3.16.0-39-powerpc-e500mc, linux-image-3.16.0-39-powerpc64-smp, linux-image-3.16.0-39-powerpc64-emb, linux-image-3.16.0-39-generic, linux
• USN-2635-1: linux-image-3.16.0-39-lowlatency, linux-image-3.16.0-39-generic-lpae, linux-image-3.16.0-39-powerpc-smp, linux-lts-utopic, linux-image-3.16.0-39-powerpc-e500mc, linux-image-extra-3.16.0-39-generic, linux-image-3.16.0-39-powerpc64-emb, linux-image-3.16.0-39-generic, linux-image-3.16.0-39-powerpc64-smp
• USN-2636-1: linux-image-3.19.0-20-powerpc64-emb, linux-lts-vivid, linux-image-3.19.0-20-generic, linux-image-3.19.0-20-generic-lpae, linux-image-3.19.0-20-powerpc-smp, linux-image-3.19.0-20-powerpc64-smp, linux-image-extra-3.19.0-20-generic, linux-image-3.19.0-20-powerpc-e500mc, linux-image-3.19.0-20-lowlatency
• USN-2631-1: linux-image-3.2.0-85-generic-pae, linux-image-3.2.0-85-omap, linux-image-3.2.0-85-virtual, linux-image-3.2.0-85-generic, linux-image-3.2.0-85-highbank, linux-image-3.2.0-85-powerpc-smp, linux, linux-image-3.2.0-85-powerpc64-smp
• USN-2638-1: linux-image-3.19.0-20-powerpc64-emb, linux-image-3.19.0-20-generic, linux-image-3.19.0-20-generic-lpae, linux-image-3.19.0-20-powerpc-smp, linux-image-3.19.0-20-powerpc64-smp, linux-image-3.19.0-20-powerpc-e500mc, linux, linux-image-3.19.0-20-lowlatency
• USN-2632-1: linux-ti-omap4, linux-image-3.2.0-1465-omap4
• USN-2565-1: linux-image-3.16.0-34-powerpc64-smp, linux-image-3.16.0-34-powerpc-smp, linux-image-3.16.0-34-generic, linux-image-3.16.0-34-powerpc64-emb, linux-image-3.16.0-34-lowlatency, linux-image-3.16.0-34-generic-lpae, linux, linux-image-3.16.0-34-powerpc-e500mc
• USN-2564-1: linux-image-3.16.0-34-powerpc64-smp, linux-image-3.16.0-34-powerpc-smp, linux-lts-utopic, linux-image-3.16.0-34-generic, linux-image-3.16.0-34-powerpc64-emb, linux-image-3.16.0-34-lowlatency, linux-image-3.16.0-34-generic-lpae, linux-image-extra-3.16.0-34-generic, linux-image-3.16.0-34-powerpc-e500mc