Description
The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose memory locations for the vDSO area, which makes it easier for local users to bypass the ASLR protection mechanism by guessing a location at the end of a PMD.
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://git.kernel.org/?p=linux/kernel/git/tip/tip.git%3Ba=commit%3Bh=fbe1bf140671619508dfa575d74a185ae53c5dbb ↗
- http://www.ubuntu.com/usn/USN-2515-1 ↗
- http://www.debian.org/security/2015/dsa-3170 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html ↗
- http://rhn.redhat.com/errata/RHSA-2015-1778.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00035.html ↗
- http://www.ubuntu.com/usn/USN-2514-1 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-January/148480.html ↗
- http://www.openwall.com/lists/oss-security/2015/01/09/8 ↗
- http://www.ubuntu.com/usn/USN-2518-1 ↗
- http://rhn.redhat.com/errata/RHSA-2015-1787.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html ↗
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html ↗
- http://www.securityfocus.com/bid/71990 ↗
- http://www.openwall.com/lists/oss-security/2014/12/09/10 ↗
- http://www.ubuntu.com/usn/USN-2517-1 ↗
- http://v0ids3curity.blogspot.in/2014/12/return-to-vdso-using-elf-auxiliary.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html ↗
- http://www.ubuntu.com/usn/USN-2516-1 ↗
- http://www.ubuntu.com/usn/USN-2513-1 ↗
- http://git.kernel.org/?p=linux/kernel/git/luto/linux.git%3Ba=commit%3Bh=bc3b94c31d65e761ddfe150d02932c65971b74e2 ↗
- http://rhn.redhat.com/errata/RHSA-2015-1081.html ↗