CVE-2014-9419

Description

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.

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f647d7c155f069c1a068030255c300663516420e
• http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html
• http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
• http://rhn.redhat.com/errata/RHSA-2015-1081.html
• http://www.debian.org/security/2015/dsa-3128
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
• http://www.openwall.com/lists/oss-security/2014/12/25/1
• http://www.securityfocus.com/bid/71794
• http://www.ubuntu.com/usn/USN-2515-1
• http://www.ubuntu.com/usn/USN-2516-1
• http://www.ubuntu.com/usn/USN-2517-1
• http://www.ubuntu.com/usn/USN-2518-1
• http://www.ubuntu.com/usn/USN-2541-1
• http://www.ubuntu.com/usn/USN-2542-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1177260
• https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e
• https://security-tracker.debian.org/tracker/CVE-2014-9419

CWEs

CWE-200