kernel: Null pointer dereference in fs/ocfs2/cluster/nodemanager.c allows local users to cause denial of service
Published Mar 5, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.47%
Description
In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of service (NULL pointer dereference and BUG) because a required mutex is not used.
Affected products
No data.
- < 4.15
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.47% (0.00469) | 38.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.50% (0.00496) | 38.41th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00048) | 12.00th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.52% (0.01516) | 33.38th | v1 |
| Jan 6, 2022 | 1.52% (0.01516) | 32.67th | v1 |
| Sep 1, 2021 | 1.52% (0.01516) | 72.58th | v1 |
| Apr 14, 2021 | 1.52% (0.01516) | 0.00th | v1 |
References (14)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=853bc26a7ea39e354b9f8889ae7ad1492ffa28d2 x_refsource_MISCPatchVendor Advisory
- http://www.securityfocus.com/bid/103278 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-18216 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1551992 Issue Tracking
- https://github.com/torvalds/linux/commit/853bc26a7ea39e354b9f8889ae7ad1492ffa28d2 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-18216
- https://usn.ubuntu.com/3776-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3776-2/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3798-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3798-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2017-18216
- https://www.debian.org/security/2018/dsa-4187 vendor-advisoryx_refsource_DEBIAN
- https://www.debian.org/security/2018/dsa-4188 vendor-advisoryx_refsource_DEBIAN
Change history (0)
No recorded changes yet.