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.
CVE-2017-10661
Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.0; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.0
- EG Score
- 7.0(medium)
- EPSS
- 96.0%
- KEV
- Not listed
Published
August 19, 2017
Last Modified
May 13, 2026
References (26)
- cve@mitrehttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1e38da300e1e395a15048b0af1e5305bd91402f6
- cve@mitrehttp://www.debian.org/security/2017/dsa-3981
- cve@mitrehttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.15
- cve@mitrehttp://www.securityfocus.com/bid/100215
- cve@mitrehttps://access.redhat.com/errata/RHSA-2018:3083
- cve@mitrehttps://access.redhat.com/errata/RHSA-2018:3096
- cve@mitrehttps://access.redhat.com/errata/RHSA-2019:4057
- cve@mitrehttps://access.redhat.com/errata/RHSA-2019:4058
- cve@mitrehttps://access.redhat.com/errata/RHSA-2020:0036
- cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=1481136
- cve@mitrehttps://github.com/torvalds/linux/commit/1e38da300e1e395a15048b0af1e5305bd91402f6
- cve@mitrehttps://source.android.com/security/bulletin/2017-08-01
- cve@mitrehttps://www.exploit-db.com/exploits/43345/
- af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1e38da300e1e395a15048b0af1e5305bd91402f6
- af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2017/dsa-3981
Patch Availability(7)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-extra-3.13.0-135-generic (3.13.0-135.184) @ trusty | 2026-05-22 | ubuntu |
| ubuntu | linux-image-generic-lts-trusty (3.13.0.135.125) @ precise | 2026-05-22 | ubuntu |
| redhat | kernel-0:3.10.0-862.46.1.el7 | 2020-01-07 | redhat |
| redhat | kernel-0:3.10.0-693.61.1.el7 | 2019-12-03 | redhat |
| redhat | kernel-rt-1:3.10.0-693.61.1.rt56.656.el6rt | 2019-12-03 | redhat |
| redhat | kernel-rt-0:3.10.0-957.rt56.910.el7 | 2018-10-30 | redhat |
| redhat | kernel-0:3.10.0-957.el7 | 2018-10-30 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
All Vendor Advisories
(7)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Red HatRHSA-2018:3083MODERATE2017-02-10
RHSA-2018:3083 — Moderate
- Red HatRHSA-2018:3096MODERATE2017-02-10
RHSA-2018:3096 — Moderate
- Red HatRHSA-2019:4057MODERATE2017-02-10
RHSA-2019:4057 — Moderate
- Red HatRHSA-2019:4058MODERATE2017-02-10
RHSA-2019:4058 — Moderate
- Red HatRHSA-2020:0036MODERATE2017-02-10
RHSA-2020:0036 — Moderate
- UbuntuUSN-3470-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-3470-2MEDIUM
Linux kernel (Trusty HWE) vulnerabilities
Data Freshness Timeline
(refreshed 10× in last 7d / 36× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
- 2026-07-06 16:24 UTCEPSS rescore
- 2026-07-06 16:24 UTCEPSS rescore
- 2026-07-06 02:20 UTCEPSS rescore
- 2026-07-06 02:20 UTCEPSS rescore
- 2026-07-05 02:27 UTCEPSS rescore
- 2026-07-04 06:28 UTCEPSS rescore
- 2026-07-01 15:02 UTCEPSS rescore
- 2026-06-30 23:19 UTCEPSS rescore
- 2026-06-30 23:19 UTCEPSS rescore
- 2026-06-29 14:03 UTCEPSS rescore
- 2026-06-28 04:53 UTCEPSS rescore
- 2026-06-27 03:05 UTCEPSS rescore
- 2026-06-25 13:47 UTCEPSS rescore
- 2026-06-24 14:02 UTCEPSS rescore
- 2026-06-23 21:30 UTCEPSS rescore
- 2026-06-23 01:30 UTCOSV refresh
- 2026-06-21 14:54 UTCEPSS rescore
- 2026-06-21 14:54 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-19 19:23 UTCEPSS rescore
- 2026-06-19 19:23 UTCEPSS rescore
- 2026-06-18 17:50 UTCEPSS rescore
- 2026-06-18 17:50 UTCEPSS rescore
Show 42 moreShow fewer
- 2026-06-17 17:50 UTCEPSS rescore
- 2026-06-17 17:50 UTCEPSS rescore
- 2026-06-16 17:50 UTCEPSS rescore
- 2026-06-15 17:45 UTCEPSS rescore
- 2026-06-14 23:14 UTCEPSS rescore
- 2026-06-14 23:14 UTCEPSS rescore
- 2026-06-13 22:57 UTCEPSS rescore
- 2026-06-13 22:57 UTCEPSS rescore
- 2026-06-12 23:09 UTCEPSS rescore
- 2026-06-11 13:57 UTCEPSS rescore
- 2026-06-08 14:14 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-05 22:44 UTCEPSS rescore
- 2026-06-05 20:57 UTCOSV refresh
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-02 20:10 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-05-29 13:41 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-24 16:44 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
- 2026-05-22 10:31 UTCEG score recompute
- 2026-05-22 10:31 UTCVendor advisory
- 2026-05-22 10:31 UTCGHSA enrichment
- 2026-05-20 22:37 UTCEPSS rescore
- 2026-05-20 22:37 UTCEPSS rescore
- 2026-05-20 22:37 UTCEPSS rescore
- 2026-05-20 11:21 UTCEPSS rescore
- 2026-05-20 11:21 UTCEPSS rescore
- 2026-05-18 21:30 UTCEPSS rescore
- 2026-05-18 21:30 UTCEPSS rescore
- 2026-05-18 21:30 UTCEPSS rescore
Publicly available exploits
(2 references)Working exploit code is in the public domain (1 GitHub PoC) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-43345First seen Dec 15, 2017
Linux kernel < 4.10.15 - Race Condition Privilege Escalation
Open source ↗ - GitHub PoCGeneBlue/CVE-2017-10661_POCFirst seen Aug 11, 2017
poc for cve-2017-10661
Open source ↗
Related CVEs(same vendor)
Frequently asked(5)
What is CVE-2017-10661?
When was CVE-2017-10661 disclosed?
Is CVE-2017-10661 actively exploited?
What is the CVSS score of CVE-2017-10661?
How do I remediate CVE-2017-10661?
Dependency Blast Radius
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