Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 3.18.9 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://hmarco.org/bugs/linux-ASLR-integer-overflow.htmlExploit
- 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-2015-1137.html
- http://rhn.redhat.com/errata/RHSA-2015-1138.html
- http://rhn.redhat.com/errata/RHSA-2015-1221.html
- http://www.debian.org/security/2015/dsa-3170
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.1Vendor Advisory
- http://www.openwall.com/lists/oss-security/2015/02/13/13
- http://www.securityfocus.com/bid/72607
- http://www.ubuntu.com/usn/USN-2560-1
- http://www.ubuntu.com/usn/USN-2561-1
- http://www.ubuntu.com/usn/USN-2562-1
- http://www.ubuntu.com/usn/USN-2563-1
FAQ
What is CVE-2015-1593?
CVE-2015-1593 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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...
How severe is CVE-2015-1593?
CVE-2015-1593 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-1593?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.