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TI-2016-05318 Aliases CVE-2016-6197GHSA-p6f5-7r7f-h77r

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before…

Priority LOW 25CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 10 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.00505 43rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 10 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*6VulnerableOracle
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 4.5.7VulnerableLinux
cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*3.4VulnerableOracle
  • cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:* Versions 6 Vulnerable ·Oracle
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 4.5.7 Vulnerable ·Linux
  • cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2016:1875 Released 2016-09-15 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-327.36.1.rt56.237.el7, kernel-rt-debug-3.10.0-327.36.1.rt56.237.el7, kernel-rt-debug-devel-3.10.0-327.36.1.rt56.237.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-327.36.1.rt56.237.el7, kernel-rt-debug-3.10.0-327.36.1.rt56.237.el7, kernel-rt-debug-devel-3.10.0-327.36.1.rt56.237.el7 +7
  • RHSA-2016:1847 Released 2016-09-15 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-327.36.1.el7, kernel-abi-whitelists-3.10.0-327.36.1.el7, kernel-debug-3.10.0-327.36.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.36.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-327.36.1.el7, kernel-abi-whitelists-3.10.0-327.36.1.el7, kernel-debug-3.10.0-327.36.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.36.1.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-327.36.1.el7, kernel-abi-whitelists-3.10.0-327.36.1.el7, kernel-bootwrapper-3.10.0-327.36.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-327.36.1.el7, kernel-tools-libs-devel-3.10.0-327.36.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-327.36.1.el7, kernel-abi-whitelists-3.10.0-327.36.1.el7, kernel-debug-3.10.0-327.36.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.36.1.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise MRG 2AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2016:1875
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1847
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2016:1875
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-6197
  2. 2026-10-03 Alias added: GHSA-p6f5-7r7f-h77r

References

Patch 2

Advisory 9

Other 1

Sources

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