Off-by-one Error Affecting kernel-rt-debug-kvm package, versions <0:3.10.0-514.16.1.rt56.437.el7
Threat Intelligence
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Test your applications- Snyk IDSNYK-RHEL7-KERNELRTDEBUGKVM-4666881
- published26 Jul 2021
- disclosed16 Feb 2017
Introduced: 16 Feb 2017
CVE-2017-2618 (opens in a new tab)How to fix?
Upgrade RHEL:7 kernel-rt-debug-kvm to version 0:3.10.0-514.16.1.rt56.437.el7 or higher.
This issue was patched in RHSA-2017:0931.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- http://www.securityfocus.com/bid/96272
- 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://access.redhat.com/security/cve/CVE-2017-2618
- https://www.debian.org/security/2017/dsa-3791
- https://marc.info/?l=selinux&m=148588165923772&w=2
- https://access.redhat.com/errata/RHSA-2017:0931
- https://bugzilla.redhat.com/show_bug.cgi?id=1419916