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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html ↗
- http://www.ubuntu.com/usn/USN-2515-1 ↗
- https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e ↗
- http://www.ubuntu.com/usn/USN-2542-1 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html ↗
- http://www.ubuntu.com/usn/USN-2541-1 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1177260 ↗
- http://www.ubuntu.com/usn/USN-2518-1 ↗
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html ↗
- http://www.securityfocus.com/bid/71794 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html ↗
- http://www.openwall.com/lists/oss-security/2014/12/25/1 ↗
- http://www.ubuntu.com/usn/USN-2517-1 ↗
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f647d7c155f069c1a068030255c300663516420e ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html ↗
- http://www.debian.org/security/2015/dsa-3128 ↗
- http://www.ubuntu.com/usn/USN-2516-1 ↗
- http://rhn.redhat.com/errata/RHSA-2015-1081.html ↗