Description
Race condition in kernel/events/core.c in the Linux kernel before 4.9.7 allows local users to gain privileges via a crafted application that makes concurrent perf_event_open system calls for moving a software group into a hardware context. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-6786.
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 | 4.9.10-1 | — |
| Debian 13 | linux | 4.9.10-1 | — |
| Debian 12 | linux | 4.9.10-1 | — |
| Debian 8 | linux | 3.16.39-1+deb8u1 | DSA-3791-1 |
| Debian 7 | linux | 3.2.84-2 | DLA-833-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +4 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-79.100 | USN-3312-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1018.27 | USN-3312-1 |
| Ubuntu 16.04 LTS | linux-gke | 4.4.0-1014.14 | USN-3312-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.10.0-32.36~16.04.1 | USN-3361-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1057.64 | USN-3312-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1059.63 | USN-3312-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-79.100~14.04.1 | USN-3312-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-693.rt56.617.el7 | RHSA-2017:2077 |
| RHEL 7 | perf +17 | 3.10.0-693.el7 | RHSA-2017:1842 |
| RHEL 6 | perf +16 | 2.6.32-754.el6 | RHSA-2018:1854 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.2.1.rt56.585.el6rt | RHSA-2017:2669 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.33.el6uek | 0.5.3-2.el6 | ELSA-2017-3533 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.33.el7uek | 0.5.3-2.el7 | ELSA-2017-3533 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-61.1.33.el7uek | ELSA-2017-3533 |
| Oracle Linux 7 | perf +11 | 3.10.0-693.el7 | ELSA-2017-1842 |
Advisories 11
- RHSA-2018:1854 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:2669 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:2077 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:1842 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3361-1 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3312-1 linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-833-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3791-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3312-2 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- ELSA-2017-1842 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017
- ELSA-2017-3533 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 31, 2017
References
- 96264 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1422825
- https://github.com/torvalds/linux/commit/321027c1fe77f892f4ea07846aeae08cefbbb290
- RHSA-2017:2669 vendor-advisory
- RHSA-2018:1854 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.7
- https://source.android.com/security/bulletin/pixel/2017-11-01
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=321027c1fe77f892f4ea07846aeae08cefbbb290
- RHSA-2017:2077 vendor-advisory
- RHSA-2017:1842 vendor-advisory
- DSA-3791 vendor-advisory
- [oss-security] 20170216 Linux: CVE-2017-6001: Incomplete fix for CVE-2016-6786: perf/core: Fix concurrent sys_perf_event_open() vs. 'move_group' race mailing-list