vulnwire
5.5med

CVE-2016-6197

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry befo…

Published 10 y ago · modified 4 mo ago · JSON

CVSS
5.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.5%
percentile 43%
Public exploits
0
none known

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.

Exploit prediction (EPSS)

0.51% probability of exploitation in the next 30 days, higher than 43% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD2.04.9AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds
Linux kernel (RSS, critical only)

References

  • oracle.com /technetwork/topics/security/ovmbulletinjul2016-3090546.html · x_refsource_CONFIRM, x_transferred
  • ubuntu.com /usn/USN-3070-1 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1355650 · x_refsource_CONFIRM, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274 · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/topics/security/linuxbulletinjul2016-3090544.html · x_refsource_CONFIRM, x_transferred
  • rhn.redhat.com /errata/RHSA-2016-1847.html · vendor-advisory, x_refsource_REDHAT, x_transferred
  • securityfocus.com /bid/91709 · vdb-entry, x_refsource_BID, x_transferred
  • rhn.redhat.com /errata/RHSA-2016-1875.html · vendor-advisory, x_refsource_REDHAT, x_transferred
  • ubuntu.com /usn/USN-3070-3 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • securitytracker.com /id/1036273 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • ubuntu.com /usn/USN-3070-2 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • github.com /torvalds/linux/commit/11f3710417d026ea2f4fcf362d866342c5274185 · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2016/07/11/8 · mailing-list, x_refsource_MLIST, x_transferred
  • ubuntu.com /usn/USN-3070-4 · vendor-advisory, x_refsource_UBUNTU, x_transferred

Sources

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