kernel: vfs: BUG in truncate_inode_pages_range() and fuse client
Published Dec 6, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.40%
Description
A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an application punches a hole in a file that does not end aligned to a page boundary.
Affected products
-
- Version 6, 7StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Red Hat, Inc. | Red Hat Enterprise Linux | n/a |
|
- 6.0
- 7.0
- 6.0
- 7.0
- 6.0
- 7.0
- 7.6
- 7.6
- 7.6
- 6.0
- 7.0
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-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 7
kernel-alt
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-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 7 | kernel-alt | 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, Red Hat Enterprise Linux 7 for ARM and Red Hat Enterprise Linux 7 for Power LE. This issue affects the versions of the Linux kernel as shipped with 6, 7 and Red Hat Enterprise 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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.40% (0.00398) | 31.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00398) | 31.35th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.11% (0.00112) | 26.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.53% (0.01531) | 69.59th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.08% (0.00085) | 22.32th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | 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) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v1 |
| Jan 6, 2022 | 1.45% (0.01454) | 31.96th | v1 |
| Sep 1, 2021 | 1.45% (0.01454) | 71.88th | v1 |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
References (9)
- http://www.securityfocus.com/bid/102128 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0676 vendor-advisoryx_refsource_REDHATVendor Advisory
- https://access.redhat.com/errata/RHSA-2018:1062 vendor-advisoryx_refsource_REDHATVendor Advisory
- https://access.redhat.com/errata/RHSA-2018:1854 vendor-advisoryx_refsource_REDHATVendor Advisory
- https://access.redhat.com/security/cve/CVE-2017-15121 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1520893 x_refsource_CONFIRMIssue TrackingVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-15121
- https://support.f5.com/csp/article/K42142782?utm_source=f5support&%3Butm_medium=RSS x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2017-15121
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/102128 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2018:0676 | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| https://access.redhat.com/errata/RHSA-2018:1062 | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| https://access.redhat.com/errata/RHSA-2018:1854 | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-15121 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1520893 | x_refsource_CONFIRMIssue TrackingVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-15121 | ||
| https://support.f5.com/csp/article/K42142782?utm_source=f5support&%3Butm_medium=RSS | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2017-15121 |
Change history (0)
No recorded changes yet.