CVE-2016-6197
Summary
| CVE | CVE-2016-6197 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-08-06 20:59:12 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.0 5.5 MEDIUM from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-20 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:L/AC:L/Au:N/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| USN-3070-1: Linux kernel vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Linux Kernel Multiple Denial of Service Vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Oracle VM Server for x86 Bulletin - July 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Vendor Advisory |
| USN-3070-2: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| oss-security - Re: cvs request: local DoS using rename syscall on overlayfs on top of xfs to crash the kernel - Linux kernel | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Oracle Linux Bulletin - July 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Third Party Advisory |
| ovl: verify upper dentry before unlink and rename · torvalds/linux@11f3710 · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Issue Tracking, Patch |
| USN-3070-3: Linux kernel (Qualcomm Snapdragon) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-3070-4: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Linux Kernel xfsoverlay Rename Bugs Let Local Users Cause Denial of Service Conditions on the Target System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| kernel/git/torvalds/linux.git - Linux kernel source tree | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Issue Tracking, Patch |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Bug 1355650 – CVE-2016-6197 kernel: overlayfs: missing upper dentry verification before unlink and rename | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 671064 EulerOS Security Update for kernel (EulerOS-SA-2019-2599)