CVE-2014-9419
Published: 25 December 2014
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address.
From the Ubuntu security team
A flaw was discovered in how Thread Local Storage (TLS) is handled by the task switching function in the Linux kernel for x86_64 based machines. A local user could exploit this flaw to bypass the Address Space Layout Radomization (ASLR) protection mechanism.
Notes
Author | Note |
---|---|
jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.04 preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
linux-2.6 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-armadaxp Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-ec2 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-flo Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-gke Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-goldfish Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-grouper Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-lts-wily Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-maguro Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-mako Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-manta Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-raspi2 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-snapdragon Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc1)
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9419
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/arch/x86?id=f647d7c155f069c1a068030255c300663516420e (v3.19-rc1)
- https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e
- https://bugzilla.redhat.com/show_bug.cgi?id=1177260
- http://www.openwall.com/lists/oss-security/2014/12/25/1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f647d7c155f069c1a068030255c300663516420e
- https://ubuntu.com/security/notices/USN-2515-1
- https://ubuntu.com/security/notices/USN-2516-1
- https://ubuntu.com/security/notices/USN-2517-1
- https://ubuntu.com/security/notices/USN-2518-1
- https://ubuntu.com/security/notices/USN-2541-1
- https://ubuntu.com/security/notices/USN-2542-1
- NVD
- Launchpad
- Debian