CVE-2016-3672
UnknownEPSS 1.17%
Last modified
CVE-2016-3672 is a vulnerability of currently unknown severity. The arch_pick_mmap_layout function in arch/x86/mm/mmap.c in the Linux kernel through 4.5.2 does not properly randomize the legacy base address, which makes it easier for local users to defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag, and bypass the ASLR protection mechanism for a setuid or setgid program, by disabling stack-consumption resource limits.. EPSS estimates a 1.17% chance of exploitation in the next 30 days.
Description
The arch_pick_mmap_layout function in arch/x86/mm/mmap.c in the Linux kernel through 4.5.2 does not properly randomize the legacy base address, which makes it easier for local users to defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag, and bypass the ASLR protection mechanism for a setuid or setgid program, by disabling stack-consumption resource limits.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Canonical | Ubuntu Linux | 12.04 | — |
| Canonical | Ubuntu Linux | 14.04 | — |
| Canonical | Ubuntu Linux | 15.10 | — |
| Novell | Suse Linux Enterprise Software Development Kit | 12.0 | — |
| Novell | Suse Linux Enterprise Desktop | 12.0 | — |
| Novell | Suse Linux Enterprise Live Patching | 12.0 | — |
| Novell | Suse Linux Enterprise Module For Public Cloud | 12.0 | — |
| Novell | Suse Linux Enterprise Real Time Extension | 12.0 | Sp1 |
| Novell | Suse Linux Enterprise Server | 12.0 | — |
| Novell | Suse Linux Enterprise Workstation Extension | 12.0 | — |
| Linux | Linux Kernel | <= 4.5.2 | — |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlThird Party Advisory
- http://www.ubuntu.com/usn/USN-2989-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2996-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2997-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2998-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3000-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3001-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3002-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3003-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3004-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1324749Issue Tracking
- https://github.com/torvalds/linux/commit/8b8addf891de8a00e4d39fc32f93f7c5eb8fecebPatch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlThird Party Advisory
- http://www.ubuntu.com/usn/USN-2989-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2996-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2997-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2998-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3000-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3001-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3002-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3003-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3004-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1324749Issue Tracking
- https://github.com/torvalds/linux/commit/8b8addf891de8a00e4d39fc32f93f7c5eb8fecebPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-3672?
The arch_pick_mmap_layout function in arch/x86/mm/mmap.c in the Linux kernel through 4.5.2 does not properly randomize the legacy base address, which makes it easier for local users to defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag, and bypass the ASLR protection mechanism for a setuid or setgid program, by disabling stack-consumption resource limits.
How severe is CVE-2016-3672?
Severity scoring for CVE-2016-3672 is pending analysis. The EPSS model estimates a 1.17% probability of exploitation in the next 30 days.
How do I fix CVE-2016-3672?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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