What’s Vulnerable › Vulnerabilities
CVE-2017-10661
- Severity: high (CVSS 7.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 13.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2017-08-19 · updated 2026-06-17
- Weakness: CWE-416
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
- Debian Linux: 8.0, 9.0
- Linux kernel: before 3.2.92; from 3.3 before 3.16.47; from 3.17 before 3.18.52; from 3.19 before 4.1.41; from 4.2 before 4.4.67; from 4.5 before 4.9.27 — fixed in 3.16.47, 3.18.52, 3.2.92, 4.1.41, 4.10.15, 4.4.67
- Red Hat Enterprise Linux: 7.0
- RedHat Enterprise Linux Aus: 7.4
- RedHat Enterprise Linux Server Eus: 7.5
- RedHat Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions: 7.4
How to fix
Upgrade to a fixed version: Linux kernel 3.16.47, 3.18.52, 3.2.92, 4.1.41. Check the vendor advisory for mitigations.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1e38da300e1e395a15048b0af1e5305bd91402f6
- http://www.debian.org/security/2017/dsa-3981
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.15
- http://www.securityfocus.com/bid/100215
- https://access.redhat.com/errata/RHSA-2018:3083
- https://access.redhat.com/errata/RHSA-2018:3096
- https://access.redhat.com/errata/RHSA-2019:4057
- https://access.redhat.com/errata/RHSA-2019:4058
- https://access.redhat.com/errata/RHSA-2020:0036
- https://bugzilla.redhat.com/show_bug.cgi?id=1481136
- https://github.com/torvalds/linux/commit/1e38da300e1e395a15048b0af1e5305bd91402f6
- https://source.android.com/security/bulletin/2017-08-01
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