What’s Vulnerable › Vulnerabilities
CVE-2017-2618
- Severity: medium (CVSS 5.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2018-07-27 · updated 2026-06-17
- Weakness: CWE-193
Description
A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.
Affected products
- Debian Linux: 8.0
- Linux kernel: before 4.9.10 — fixed in 4.9.10
- Red Hat Enterprise Linux: 7.0
- RedHat Enterprise Linux Desktop: 7.0
- RedHat Enterprise Linux Server: 7.0
- RedHat Enterprise Linux Server Aus: 7.3, 7.4
- RedHat Enterprise Linux Server Eus: 7.3, 7.4, 7.5
- RedHat Enterprise Linux Workstation: 7.0
How to fix
Upgrade to a fixed version: Linux kernel 4.9.10. Check the vendor advisory for mitigations.
References
- http://www.securityfocus.com/bid/96272
- https://access.redhat.com/errata/RHSA-2017:0931
- https://access.redhat.com/errata/RHSA-2017:0932
- https://access.redhat.com/errata/RHSA-2017:0933
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125
- https://marc.info/?l=selinux&m=148588165923772&w=2
- https://www.debian.org/security/2017/dsa-3791
- http://www.securityfocus.com/bid/96272
- https://access.redhat.com/errata/RHSA-2017:0931
- https://access.redhat.com/errata/RHSA-2017:0932
- https://access.redhat.com/errata/RHSA-2017:0933
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