vulnwire
4.7med

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…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
4.7
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 31%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.37% probability of exploitation in the next 30 days, higher than 31% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.04.7CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD2.04.7AV:L/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds
Linux kernel (RSS, critical only)

References

  • openwall.com /lists/oss-security/2016/07/13/8 · mailing-list, x_refsource_MLIST, x_transferred
  • github.com /torvalds/linux/commit/d29216842a85c7970c536108e093963f02714498 · x_refsource_CONFIRM, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d29216842a85c7970c536108e093963f02714 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/91754 · vdb-entry, x_refsource_BID, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1356471 · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:2077 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:1842 · vendor-advisory, x_refsource_REDHAT, x_transferred

Sources

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