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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.9.30-1 | — |
| Debian 13 | linux | 4.9.30-1 | — |
| Debian 12 | linux | 4.9.30-1 | — |
| Debian 7 | linux | 3.2.93-1 | DLA-1099-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-gcp-6.11 +4 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-79.100 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1018.27 | — |
| Ubuntu 16.04 LTS | linux-gke | 4.4.0-1014.14 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.10.0-32.36~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1057.64 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1059.63 | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-135.184 | USN-3470-1 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-79.100~14.04.1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-957.rt56.910.el7 | RHSA-2018:3096 |
| RHEL 7 | perf +18 | 3.10.0-957.el7 | RHSA-2018:3083 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.5 EUS | perf +18 | 3.10.0-862.46.1.el7 | RHSA-2020:0036 |
| RHEL 7.4 TUS | perf +12 | 3.10.0-693.61.1.el7 | RHSA-2019:4058 |
| RHEL 7.4 E4S | perf +14 | 3.10.0-693.61.1.el7 | RHSA-2019:4058 |
| RHEL 7.4 AUS | perf +12 | 3.10.0-693.61.1.el7 | RHSA-2019:4058 |
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.61.1.rt56.656.el6rt | RHSA-2019:4057 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.63.1 | SUSE-SU-2017:2908-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_10 | 12-2.1 | SUSE-SU-2017:3321-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_11 | 11-2.1 | SUSE-SU-2017:3323-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_12 | 10-2.1 | SUSE-SU-2017:3316-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_13 | 9-2.1 | SUSE-SU-2017:3340-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_14 | 8-2.1 | SUSE-SU-2017:3332-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_15 +1 | 7-2.1 | SUSE-SU-2017:3337-1, SUSE-SU-2017:3312-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_17 | 6-2.1 | SUSE-SU-2017:3336-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_18 +2 | 5-2.1 | SUSE-SU-2017:3320-1, SUSE-SU-2017:3318-1, SUSE-SU-2017:3313-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_21 | 4-2.1 | SUSE-SU-2017:3322-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_22 | 1-2.1 | SUSE-SU-2017:2908-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.101.1 | SUSE-SU-2017:2920-1, SUSE-SU-2017:2908-1 |
| SLES 12 | kgraft-patch-SLE12_Update_17 +1 | 11-2.1 | SUSE-SU-2017:3304-1, SUSE-SU-2017:3289-1 |
| SLES 12 | kgraft-patch-SLE12_Update_19 | 10-2.1 | SUSE-SU-2017:3308-1 |
| SLES 12 | kgraft-patch-SLE12_Update_20 | 8-2.1 | SUSE-SU-2017:3287-1 |
| SLES 12 | kgraft-patch-SLE12_Update_21 +1 | 7-2.1 | SUSE-SU-2017:3302-1, SUSE-SU-2017:3299-1 |
| SLES 12 | kgraft-patch-SLE12_Update_23 | 6-2.1 | SUSE-SU-2017:3309-1 |
| SLES 12 | kgraft-patch-SLE12_Update_24 +2 | 5-2.1 | SUSE-SU-2017:3303-1, SUSE-SU-2017:3301-1, SUSE-SU-2017:3293-1 |
| SLES 12 | kgraft-patch-SLE12_Update_27 | 4-2.1 | SUSE-SU-2017:3305-1 |
| SLES 12 | kgraft-patch-SLE12_Update_28 | 1-8.1 | SUSE-SU-2017:2920-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-108.18.3 | SUSE-SU-2017:3265-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.18.1 | SUSE-SU-2017:3265-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.5.1 | SUSE-SU-2017:2525-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.63.1 | SUSE-SU-2017:2908-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_10 | 12-2.1 | SUSE-SU-2017:3321-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_11 | 11-2.1 | SUSE-SU-2017:3323-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_12 | 10-2.1 | SUSE-SU-2017:3316-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_13 | 9-2.1 | SUSE-SU-2017:3340-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_14 | 8-2.1 | SUSE-SU-2017:3332-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_15 +1 | 7-2.1 | SUSE-SU-2017:3337-1, SUSE-SU-2017:3312-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_17 | 6-2.1 | SUSE-SU-2017:3336-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_18 +2 | 5-2.1 | SUSE-SU-2017:3320-1, SUSE-SU-2017:3318-1, SUSE-SU-2017:3313-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_21 | 4-2.1 | SUSE-SU-2017:3322-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_22 | 1-2.1 | SUSE-SU-2017:2908-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.18.1 | SUSE-SU-2017:3265-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.8.1 | SUSE-SU-2017:2694-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_2 +2 | 11-2.1 | SUSE-SU-2017:3306-1, SUSE-SU-2017:3292-1, SUSE-SU-2017:3288-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_5 | 9-2.1 | SUSE-SU-2017:3290-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_6 | 8-2.1 | SUSE-SU-2017:3291-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_7 +1 | 7-2.1 | SUSE-SU-2017:3310-1, SUSE-SU-2017:3286-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_9 | 6-2.1 | SUSE-SU-2017:3296-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.63.1 | SUSE-SU-2017:2908-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_22 | 1-2.1 | SUSE-SU-2017:2908-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.5.1 | SUSE-SU-2017:2525-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.19.12.el6uek | 0.4.5-3.el6 | ELSA-2017-3636 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.19.12.el7uek | 0.4.5-3.el7 | ELSA-2017-3636 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.19.12.el7uek | ELSA-2017-3636 |
| Oracle Linux 7 | perf +12 | 3.10.0-957.el7 | ELSA-2018-3083 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Linux kernel < 4.10.15 - Race Condition Privilege Escalation EDB-43345 · local · Dec 15, 2017
GitHub 1 repository
-
GeneBlue/CVE-2017-10661_POC ★ 12 · Aug 11, 2017
poc for cve-2017-10661
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 45
- RHSA-2018:3083 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:3096 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2020:0036 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2019:4058 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:4057 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3470-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1099-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:3299-1 Security update for the Linux Kernel (Live Patch 22 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3320-1 Security update for the Linux Kernel (Live Patch 19 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3337-1 Security update for the Linux Kernel (Live Patch 15 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3304-1 Security update for the Linux Kernel (Live Patch 18 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3287-1 Security update for the Linux Kernel (Live Patch 20 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2525-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3316-1 Security update for the Linux Kernel (Live Patch 12 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3302-1 Security update for the Linux Kernel (Live Patch 21 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3305-1 Security update for the Linux Kernel (Live Patch 27 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3265-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3288-1 Security update for the Linux Kernel (Live Patch 4 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3289-1 Security update for the Linux Kernel (Live Patch 17 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3323-1 Security update for the Linux Kernel (Live Patch 11 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3340-1 Security update for the Linux Kernel (Live Patch 13 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3309-1 Security update for the Linux Kernel (Live Patch 23 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3292-1 Security update for the Linux Kernel (Live Patch 2 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3312-1 Security update for the Linux Kernel (Live Patch 16 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3286-1 Security update for the Linux Kernel (Live Patch 8 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3301-1 Security update for the Linux Kernel (Live Patch 25 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3332-1 Security update for the Linux Kernel (Live Patch 14 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2908-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3313-1 Security update for the Linux Kernel (Live Patch 18 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3336-1 Security update for the Linux Kernel (Live Patch 17 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3290-1 Security update for the Linux Kernel (Live Patch 5 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3291-1 Security update for the Linux Kernel (Live Patch 6 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2920-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3293-1 Security update for the Linux Kernel (Live Patch 24 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3322-1 Security update for the Linux Kernel (Live Patch 21 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3321-1 Security update for the Linux Kernel (Live Patch 10 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3303-1 Security update for the Linux Kernel (Live Patch 26 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3306-1 Security update for the Linux Kernel (Live Patch 3 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2694-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3318-1 Security update for the Linux Kernel (Live Patch 20 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3296-1 Security update for the Linux Kernel (Live Patch 9 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3308-1 Security update for the Linux Kernel (Live Patch 19 for SLE 12) SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2017:3310-1 Security update for the Linux Kernel (Live Patch 7 for SLE 12 SP2) SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2018-3083 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 5, 2018
- ELSA-2017-3636 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 2, 2017
References
- RHSA-2018:3083 vendor-advisory
- 100215 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1481136
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.15
- DSA-3981 vendor-advisory
- https://source.android.com/security/bulletin/2017-08-01
- https://github.com/torvalds/linux/commit/1e38da300e1e395a15048b0af1e5305bd91402f6
- 43345 exploit
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1e38da300e1e395a15048b0af1e5305bd91402f6
- RHSA-2018:3096 vendor-advisory
- RHSA-2019:4058 vendor-advisory
- RHSA-2019:4057 vendor-advisory
- RHSA-2020:0036 vendor-advisory