Improper input validation in Linux Kernel
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 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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Linux Kernel
- Oracle Linux — versions 6
- Oracle Vm Server — versions 3.4
Weakness classification (CWE)
References
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (Vendor Advisory)
- www.ubuntu.com/usn/USN-3070-1 (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Issue Tracking)
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-1847.html (vendor-advisory)
- www.securityfocus.com/bid/91709 (vdb-entry)
- rhn.redhat.com/errata/RHSA-2016-1875.html (vendor-advisory)
- www.ubuntu.com/usn/USN-3070-3 (vendor-advisory)
- www.securitytracker.com/id/1036273 (vdb-entry)
Frequently asked questions
- What is CVE-2016-6197?
- CVE-2016-6197 is a medium-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2016-08-06.
- How severe is CVE-2016-6197?
- Medium severity. CVSS v3 base score is 5.5 out of 10.