kernel: list corruption of m_list or s_list if unused
Published May 2, 2016
5.5
MEDIUMCVSS 3.0
EPSS 0.37%
Description
The fs_pin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a certain list data structure, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call, related to fs/fs_pin.c and include/linux/fs_pin.h.
Affected products
No data.
- ≤ 4.0.4
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-rt
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-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6, 7, MRG-2, realtime and arm-kernels.
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:C
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00370) | 28.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.37% (0.00370) | 28.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00090) | 23.57th | 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 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (10)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=820f9f147dcce2602eefd9b575bbbd9ea14f0953 x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2015/05/29/10 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2015/05/29/5 mailing-listx_refsource_MLISTPatch
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5 x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2015/06/04/5 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2015-4178 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1249849 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/820f9f147dcce2602eefd9b575bbbd9ea14f0953 x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-4178
- https://www.cve.org/CVERecord?id=CVE-2015-4178
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=820f9f147dcce2602eefd9b575bbbd9ea14f0953 | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2015/05/29/10 | mailing-listx_refsource_MLIST | |
| http://openwall.com/lists/oss-security/2015/05/29/5 | mailing-listx_refsource_MLISTPatch | |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5 | x_refsource_CONFIRMVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2015/06/04/5 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2015-4178 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1249849 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/820f9f147dcce2602eefd9b575bbbd9ea14f0953 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-4178 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-4178 |
Change history (0)
No recorded changes yet.