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Overview

Vulnerability Score 5.0 5.0
CVE Id CVE-2015-1593
Last Modified 03 Jun 2015 10:03:12
Published 16 Mar 2015 06:59:07
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact NONE NONE
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity LOW
Authentication NONE

CVE-2015-1593

Summary

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.

Vulnerable Systems

Operating System

  • Linux Kernel 3.18.9


References

MLIST - [linux-kernel] 20150107 Re: [PATH] Fix stack randomization on x86_64 bit

CONFIRM - https://github.com/torvalds/linux/commit/4e7c22d447bb6d7e37bfe39ff658486ae78e8d77

CONFIRM - https://bugzilla.redhat.com/show_bug.cgi?id=1192519

MLIST - [oss-security] 20150213 Re: CVE-Request -- Linux ASLR integer overflow

CONFIRM - http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.1

MISC - http://hmarco.org/bugs/linux-ASLR-integer-overflow.html

CONFIRM - http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4e7c22d447bb6d7e37bfe39ff658486ae78e8d77

DEBIAN - DSA-3170

SUSE - SUSE-SU-2015:0736


Last Updated: 27 May 2016 11:08:06