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.
CVSS breakdown
CVSS 3.0
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Linux / Kernel4.9.10 – 4.9.10
References
- MAILING_LISThttps://marc.info/?l=selinux&m=148588165923772&w=2
- VENDOR_ADVISORYhttps://www.debian.org/security/2017/dsa-3791
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:0932
- MISChttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:0933
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:0931
- MISChttp://www.securityfocus.com/bid/96272