Resource exhaustion in Linux Kernel
CVE-2016-6213
fs/namespace.c in the Linux kernel before 4.9 does not restrict how many mounts may exist in a mount namespace, which allows local users to cause a denial of service (memory consumption and deadlock) via MS_BIND mount system calls, as demonstrated by a loop that triggers exponential growth in the number of mounts.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2016/07/13/8 (mailing-list, Mailing List)
- github.com/torvalds/linux/commit/d29216842a85c7970c536108e093963f02714498 (Patch)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- www.securityfocus.com/bid/91754 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- access.redhat.com/errata/RHSA-2017:2077 (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:1842 (vendor-advisory)
Frequently asked questions
- What is CVE-2016-6213?
- CVE-2016-6213 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 4.7/10. Published 2016-12-28.
- How severe is CVE-2016-6213?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2016-6213 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.