kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service
Published Feb 27, 2018
4.7
MEDIUMCVSS 3.0
EPSS 0.32%
Description
The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and removal of DM devices.
Affected products
No data.
- < 4.14.3
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-754.el6
Fixed · RHSA-2018:1854
Red Hat Enterprise Linux 7
kernel-0:3.10.0-862.el7
Fixed · RHSA-2018:1062
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.16.1.el7a
Fixed · RHSA-2019:4154
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-862.rt56.804.el7
Fixed · RHSA-2018:0676
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-754.el6 | Fixed | RHSA-2018:1854 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-862.el7 | Fixed | RHSA-2018:1062 |
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.16.1.el7a | Fixed | RHSA-2019:4154 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-862.rt56.804.el7 | Fixed | RHSA-2018:0676 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, as the code with the flaw is not present in this product.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:M/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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.32% (0.00322) | 22.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00340) | 25.62th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00034) | 6.44th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.46% (0.02465) | 54.82th | v1 |
| Jan 6, 2022 | 2.46% (0.02465) | 54.39th | v1 |
| Sep 1, 2021 | 2.46% (0.02465) | 78.50th | v1 |
| Apr 14, 2021 | 2.46% (0.02465) | 0.00th | v1 |
References (21)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9a41d21dceadf8104812626ef85dc56ee8a60ed x_refsource_MISCPatchVendor Advisory
- http://www.securityfocus.com/bid/103184 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0676 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:1062 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:1854 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:4154 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-18203 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1550811 Issue Tracking
- https://github.com/torvalds/linux/commit/b9a41d21dceadf8104812626ef85dc56ee8a60ed 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-2017-18203
- https://usn.ubuntu.com/3619-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3619-2/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3653-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3653-2/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3655-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3655-2/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3657-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2017-18203
- https://www.debian.org/security/2018/dsa-4187 vendor-advisoryx_refsource_DEBIAN
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.3 x_refsource_MISCRelease NotesVendor Advisory
Change history (0)
No recorded changes yet.