Description
The stack randomization feature in the Linux kernel before 3.19.1 on 64-bit platforms uses incorrect data types for the results of bitwise left-shift operations, which makes it easier for attackers to bypass the ASLR protection mechanism by predicting the address of the top of the stack, related to the randomize_stack_top function in fs/binfmt_elf.c and the stack_maxrandom_size function in arch/x86/mm/mmap.c.
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
- https://github.com/torvalds/linux/commit/4e7c22d447bb6d7e37bfe39ff658486ae78e8d77 ↗
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.1 ↗
- http://www.debian.org/security/2015/dsa-3170 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html ↗
- http://www.ubuntu.com/usn/USN-2562-1 ↗
- http://www.ubuntu.com/usn/USN-2565-1 ↗
- http://www.ubuntu.com/usn/USN-2561-1 ↗
- http://www.securityfocus.com/bid/72607 ↗
- http://www.ubuntu.com/usn/USN-2564-1 ↗
- http://www.ubuntu.com/usn/USN-2563-1 ↗
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4e7c22d447bb6d7e37bfe39ff658486ae78e8d77 ↗
- http://rhn.redhat.com/errata/RHSA-2015-1138.html ↗
- http://hmarco.org/bugs/linux-ASLR-integer-overflow.html ↗
- http://www.ubuntu.com/usn/USN-2560-1 ↗
- http://www.openwall.com/lists/oss-security/2015/02/13/13 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1192519 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html ↗
- http://rhn.redhat.com/errata/RHSA-2015-1137.html ↗
- https://lkml.org/lkml/2015/1/7/811 ↗
- http://rhn.redhat.com/errata/RHSA-2015-1221.html ↗
- https://access.redhat.com/errata/RHSA-2019:3517 ↗