kernel: xfs: unprivileged user kernel oops
Published Sep 15, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.42%
Description
The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.
Affected products
No data.
- ≤ 4.13.1
No data.
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt
Fixed · RHSA-2017:2918
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
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt | Fixed | RHSA-2017:2918 |
| 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 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 as the code with the flaw is not built in these products due to theirs build configuration. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux MRG-2. Future updates for the respective releases may address this issue.
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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.42% (0.00418) | 33.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.42% (0.00418) | 33.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00039) | 8.74th | 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 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.24% (0.01242) | 30.15th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.24% (0.01242) | 0.00th | v1 |
References (11)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3cdf540110da4572e3e29bd172087af65cc x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://seclists.org/oss-sec/2017/q3/436 x_refsource_CONFIRMMailing ListMitigationPatchThird Party Advisory
- http://www.debian.org/security/2017/dsa-3981 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.securityfocus.com/bid/100851 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2918 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-14340 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1491344 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65cc x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-14340
- https://www.cve.org/CVERecord?id=CVE-2017-14340
Change history (0)
No recorded changes yet.