kernel: Handling of might_cancel queueing is not properly pretected against race
Published Aug 19, 2017
7.0
HIGHCVSS 3.1
EPSS 13.38%
Description
Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.
Affected products
No data.
Configuration 1
- < 3.2.92
- ≥ 3.3 · < 3.16.47
- ≥ 3.17 · < 3.18.52
- ≥ 3.19 · < 4.1.41
- ≥ 4.2 · < 4.4.67
- ≥ 4.5 · < 4.9.27
- ≥ 4.10 · < 4.10.15
Configuration 2
- 7.0
- 7.4
- 7.5
- 7.4
Configuration 3
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-957.el7
Fixed · RHSA-2018:3083
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-957.rt56.910.el7
Fixed · RHSA-2018:3096
Red Hat Enterprise Linux 7.4 Advanced Update Support
kernel-0:3.10.0-693.61.1.el7
Fixed · RHSA-2019:4058
Red Hat Enterprise Linux 7.4 Telco Extended Update Support
kernel-0:3.10.0-693.61.1.el7
Fixed · RHSA-2019:4058
Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
kernel-0:3.10.0-693.61.1.el7
Fixed · RHSA-2019:4058
Red Hat Enterprise Linux 7.5 Extended Update Support
kernel-0:3.10.0-862.46.1.el7
Fixed · RHSA-2020:0036
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.61.1.rt56.656.el6rt
Fixed · RHSA-2019:4057
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-957.el7 | Fixed | RHSA-2018:3083 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-957.rt56.910.el7 | Fixed | RHSA-2018:3096 |
| Red Hat Enterprise Linux 7.4 Advanced Update Support | kernel-0:3.10.0-693.61.1.el7 | Fixed | RHSA-2019:4058 |
| Red Hat Enterprise Linux 7.4 Telco Extended Update Support | kernel-0:3.10.0-693.61.1.el7 | Fixed | RHSA-2019:4058 |
| Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions | kernel-0:3.10.0-693.61.1.el7 | Fixed | RHSA-2019:4058 |
| Red Hat Enterprise Linux 7.5 Extended Update Support | kernel-0:3.10.0-862.46.1.el7 | Fixed | RHSA-2020:0036 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.61.1.rt56.656.el6rt | Fixed | RHSA-2019:4057 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect Red Hat Enterprise Linux 5 as the code with the flaw is not present in the products listed. This issue affects Red Hat Enterprise Linux 6 and 7. Future updates for the respective releases may address this issue. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux MRG-2. This flaw is not currently planned to be addressed in future updates due to MRG-2 being an EUS release. For additional information, refer to the Extended Update Support (EUS) Guide: https://access.redhat.com/articles/rhel-eus.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
AV:N/AC:H/Au:N/C:C/I:C/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 (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 13.38% (0.13378) | 96.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.38% (0.13378) | 95.92th | v5 (v2026.06.15) |
| Apr 21, 2026 | 25.70% (0.25699) | 96.26th | v4 (v2025.03.14) |
| Mar 15, 2026 | 30.00% (0.30004) | 96.58th | v4 (v2025.03.14) |
| Oct 4, 2025 | 27.64% (0.27639) | 96.26th | v4 (v2025.03.14) |
| Jul 6, 2025 | 30.00% (0.30004) | 96.42th | v4 (v2025.03.14) |
| May 28, 2025 | 27.64% (0.27639) | 96.15th | v4 (v2025.03.14) |
| Apr 22, 2025 | 25.17% (0.25169) | 95.82th | v4 (v2025.03.14) |
| Mar 23, 2025 | 26.48% (0.26481) | 95.70th | v4 (v2025.03.14) |
| Mar 20, 2025 | 34.49% (0.34495) | 96.68th | v4 (v2025.03.14) |
| Mar 19, 2025 | 26.48% (0.26481) | 95.69th | v4 (v2025.03.14) |
| Mar 17, 2025 | 34.49% (0.34495) | 96.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00084) | 37.76th | v3 (v2023.03.01) |
| Jul 17, 2024 | 0.08% (0.00084) | 36.52th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.08% (0.00084) | 34.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00091) | 37.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.41% (0.04407) | 88.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.41% (0.04407) | 86.95th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.41% (0.04407) | 70.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.09% (0.08092) | 85.06th | v1 |
| Jan 6, 2022 | 8.09% (0.08092) | 84.89th | v1 |
| Sep 1, 2021 | 8.09% (0.08092) | 92.53th | v1 |
| Apr 14, 2021 | 8.09% (0.08092) | 0.00th | v1 |
References (16)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1e38da300e1e395a15048b0af1e5305bd91402f6 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://www.debian.org/security/2017/dsa-3981 vendor-advisoryx_refsource_DEBIANMailing ListThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.15 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.securityfocus.com/bid/100215 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3083 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4057 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4058 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0036 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-10661 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1481136 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/1e38da300e1e395a15048b0af1e5305bd91402f6 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-10661
- https://source.android.com/security/bulletin/2017-08-01 x_refsource_CONFIRMPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-10661
- https://www.exploit-db.com/exploits/43345/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
Change history (0)
No recorded changes yet.