The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3…
Priority MEDIUM 49CWE-264Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-264.
Summary
The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.
Why it matters now
EPSS 0.22204 97th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by the CNA
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.18 to before 3.18.31; 3.19 to before 4.1.22; 4.2 to before 4.4 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.18 to before 3.18.31; 3.19 to before 4.1.22; 4.2 to before 4.4 Vulnerable ·Linux
Remediation
Red Hat 3 advisories
- RHSA-2016:1541 Released 2016-08-02 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-devel-3.10.0-327.28.2.rt56.234.el7_2 +4
- Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-devel-3.10.0-327.28.2.rt56.234.el7_2 +7
- RHSA-2016:1539 Released 2016-08-02 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-debug-3.10.0-327.28.2.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.28.2.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-debug-3.10.0-327.28.2.el7 +8
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.28.2.el7
- Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-bootwrapper-3.10.0-327.28.2.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-327.28.2.el7, kernel-tools-libs-devel-3.10.0-327.28.2.el7
- Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-debug-3.10.0-327.28.2.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.28.2.el7
- RHSA-2016:1532 Released 2016-08-02 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-327.rt56.194.el6rt, kernel-rt-debug-1:3.10.0-327.rt56.194.el6rt, kernel-rt-debug-devel-1:3.10.0-327.rt56.194.el6rt +7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux Realtime (v. 7) | Fixed | RHSA-2016:1541 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2016:1539 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) | Fixed | RHSA-2016:1541 |
| Red Hat MRG Realtime for RHEL 6 Server v.2 | Fixed | RHSA-2016:1532 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8660
- 2026-10-03 Alias added: GHSA-2m7p-qcqr-gfv2
References
Advisory 18
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- SUSE-SU-2016:0751
- SUSE-SU-2016:0755
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545
- RHSA-2016:1541
- https://github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545
- [oss-security] 20151223 CVE request -- linux kernel: overlay: fix permission checking for setattr
- RHSA-2016:1539
- USN-2857-2
- RHSA-2016:1532
- https://bugzilla.redhat.com/show_bug.cgi?id=1291329
- USN-2858-2
- USN-2858-3
- USN-2858-1
- USN-2857-1
- SUSE-SU-2016:0752
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2015-8660 · CVE Program
- CVE-2015-8660 · NVD
- FIRST EPSS
- GHSA-2m7p-qcqr-gfv2 · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8660 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences