Description
The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel before 4.10.13 | Linux kernel before 4.10.13 | — |
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 | 4.9.25-1 | — |
| Debian 13 | linux | 4.9.25-1 | — |
| Debian 12 | linux | 4.9.25-1 | — |
| Debian 7 | linux | 3.2.88-1 | DLA-922-1 |
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 | 3.13.0-132.181 | USN-3422-1 |
| 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 | 3.10.0-693.17.1.rt56.636.el7 | RHSA-2018:0152 |
| RHEL 7 | perf +18 | 3.10.0-693.17.1.el7 | RHSA-2018:0151 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.17.1.rt56.604.el6rt | RHSA-2018:0181 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 1-2.3.1 | SUSE-SU-2019:1289-1 |
| SLES 12 SP1 | lttng-modules | 2.7.0-4.4.1 | SUSE-SU-2019:1289-1 |
| SLES 12 | kernel-ec2 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-108.21.2 | SUSE-SU-2018:0011-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.21.1 | SUSE-SU-2018:0011-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.11.1 | SUSE-SU-2018:0040-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 1-2.3.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 12 SP1 | lttng-modules | 2.7.0-4.4.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.21.1 | SUSE-SU-2018:0011-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.14.1 | SUSE-SU-2018:0180-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.11.1 | SUSE-SU-2018:0040-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.67.3.el7uek | ELSA-2022-9852 |
| Oracle Linux 7 | perf +11 | 3.10.0-693.17.1.el7 | ELSA-2018-0151 |
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 < 4.10.13 - 'keyctl_set_reqkey_keyring' Local Denial of Service EDB-42136 · dos · Jun 7, 2017 · verified
GitHub 1 repository
-
homjxi0e/CVE-2017-7472 ★ 0 · Jun 8, 2017
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 14
- RHSA-2018:0181 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0151 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0152 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3361-1 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3422-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3312-1 linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-922-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3312-2 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:0040-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0180-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0011-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2022-9852 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 4, 2022
- ELSA-2018-0151 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 25, 2018
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9f838d104fed6f2f61d68164712e3204bf5271b
- https://lkml.org/lkml/2017/4/3/724
- RHSA-2018:0181 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1442086
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.13
- SUSE-SU-2018:0011 vendor-advisory
- RHSA-2018:0152 vendor-advisory
- https://github.com/torvalds/linux/commit/c9f838d104fed6f2f61d68164712e3204bf5271b
- 98422 vdb-entry
- 1038471 vdb-entry
- https://bugzilla.novell.com/show_bug.cgi?id=1034862
- 42136 exploit
- http://openwall.com/lists/oss-security/2017/05/11/1
- RHSA-2018:0151 vendor-advisory
- https://lkml.org/lkml/2017/4/1/235